Updated on 2025/09/03

写真a

 
ASAKAWA,Makoto
 
Organization
Faculty of Engineering Science Professor
Title
Professor
External link

Degree

  • -

Research Interests

  • Plasma Physics

  • accelerator physics

  • プラズマ物理

  • 加速器物理

Research Areas

  • Natural Science / Mathematical physics and fundamental theory of condensed matter physics

Education

  • Osaka University   Graduate School, Division of Engineering

    - 1995

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  • Osaka University

    - 1995

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    Country: Japan

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  • Kansai University   Faculty of Engineering

    - 1990

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    Country: Japan

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  • Kansai University   Faculty of Engineering

    - 1990

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Research History

  • 関西大学システム理工学部物理・応用物理学科

    2012

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  • Kansai University Faculty of Engineering Science, Department of Pure and Applied Physics   Associate Professor

    2005 - 2011

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  • 大阪大学大学院工学研究科電子工学専攻

    2000 - 2005

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  • 京都大学大学院理学研究科物理・宇宙物理学専攻

    1995 - 2000

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Professional Memberships

Papers

  • Accurate Phase Calibration of Multistatic Imaging System for Medical and Industrial Applications Reviewed

    Hiroshi Tabata, Makoto R. Asakawa, Soichiro Yamaguchi

    Applied Sciences   14 ( 22 )   10671 - 10671   2024.11

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    Publishing type:Research paper (scientific journal)   Publisher:MDPI AG  

    Multistatic imaging systems are commonly used in radar systems and microwave imaging. In these systems, many antennas are arranged three-dimensionally and connected to RF switches. The length of each transmitter (Tx) and receiver (Rx) channel differs slightly, causing artifacts in high-resolution image reconstruction. This study presents a novel method for the phase calibration of multistatic systems. This method does not require system reconstruction and can automatically perform phase calibration in a short time. This method is expected to facilitate an accurate phase measurement in multistatic systems. The approach involves phase calibration by analyzing the reflection coefficients of antenna elements in the time domain. Imaging experiments were performed on a multistatic imaging system using this calibration method, and the position and shape of a metal rod with a diameter one-fourth of a wavelength were reconstructed by simple back-projection with an accuracy beyond the diffraction limit.

    DOI: 10.3390/app142210671

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  • Terahertz time-domain spectroscopy of tooth components for caries diagnosis

    Haruto Kobashi, Wangxuan Zhao, Verdad C. Agulto, Kosaku Kato, Toshiyuki Iwamoto, Koki Miura, Takahiko Shiraogawa, Yoshihiro Nishitani, Naoya Kurahashi, Yoshinori Sakanoue, Sadami Tsutsumi, Makoto R. Asakawa, Makoto Nakajima

    International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz   2024

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    Publishing type:Research paper (international conference proceedings)  

    DOI: 10.1109/IRMMW-THz60956.2024.10697660

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  • Visualization of Particle Packing Structure of AP/HTPB Composite Propellant by 3D X-ray CT Image Analysis Reviewed

    Akihiro Terachi, Taisei Nitta, Haruaki Komori, Akihiro Iwasaki, Makoto Asakawa, Soichiro Yamaguchi

    AIAA SCITECH 2023 Forum   2023.1

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    Publishing type:Research paper (international conference proceedings)   Publisher:American Institute of Aeronautics and Astronautics  

    DOI: 10.2514/6.2023-1690

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  • Ultrafast visualization of an electric field under the Lorentz transformation Reviewed

    Masato Ota, Koichi Kan, Soichiro Komada, Youwei Wang, Verdad C. Agulto, Valynn Katrine Mag-usara, Yasunobu Arikawa, Makoto R. Asakawa, Youichi Sakawa, Tatsunosuke Matsui, Makoto Nakajima

    Nature Physics   18 ( 12 )   1436 - 1440   2022.10

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    Publishing type:Research paper (scientific journal)   Publisher:Springer Science and Business Media LLC  

    Abstract

    In special relativity, four-vectors, such as space–time, energy–momentum and electromagnetic potential vectors, follow the Lorentz transformation. The transformations of space–time and energy–momentum vectors have been tested by time dilation and rest mass energy experiments, respectively. However, the Lorentz transformation of electromagnetic potentials has never been directly demonstrated in experiments due to the limitations of the diagnostics. Here we show the spatiotemporal electric-field profiles around a highly energetic electron beam with a subpicosecond temporal resolution obtained by a terahertz technique based on electro-optic sampling. We observe the Coulomb field contraction in the propagation direction of the beam under the Lorentz transformation. After passing the beam through a metallic plate, we investigate the birth of the Coulomb field around it and follow the spatiotemporal evolution of the spherical wavefront, which is derived by the Liénard–Wiechert potentials. The measured electric-field profile in the far propagation distance is experimentally confirmed to coincide with the calculation of the Liénard–Wiechert potentials and the Lorentz transformation. Our ultrafast measurement of a spatiotemporal relativistic electric field provides both additional experimental evidence of special relativity and a platform for detailed experimental research of energetic charged particle beams and electromagnetic radiation physics.

    DOI: 10.1038/s41567-022-01767-w

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    Other Link: https://www.nature.com/articles/s41567-022-01767-w

  • Generation of a Sub-Picosecond Sheet Electron Beam Using a 100 fs Laser Reviewed

    M. Asakawa, S. Yamaguchi, Y. Karaki, H. Matsubara, Y. Miyajima, R. Michishita, T. Shirai, R. Horii, S. Yoshimatsu

    Proceedings of 40th International Free Electron Laser Conference Trieste,Italy | August 22-26, 2022   175 - 178   2022.9

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    Publishing type:Research paper (international conference proceedings)  

    DOI: 10.18429/JACoW-FEL2022-TUP09

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  • Ablation phenomena by intense terahertz vortex beam Reviewed

    You Wei Wang, Sadashi Segawa, Tomoki Shimizu, Verdad C. Agulto, Valynn Katrine Mag-usara, Kosaku Kato, Katsuhiko Miyamoto, Takashige Omatsu, Kotaro Makino, Junji Tominaga, Goro Isoyama, Makoto Asakawa, Makoto Nakajima

    Applied Physics A   128 ( 9 )   2022.8

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    Publishing type:Research paper (scientific journal)   Publisher:Springer Science and Business Media LLC  

    DOI: 10.1007/s00339-022-05970-7

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    Other Link: https://link.springer.com/article/10.1007/s00339-022-05970-7/fulltext.html

  • Contribution of Microwave to the Formation of Octacalcium Phosphate Intercalating Succinate Ions Reviewed

    Yoshiaki Tsunawaki, Kiyoko Sakamoto, Soichiro Yamaguchi, Makoto Asakawa, Yuusuke Yamaguchi, Seitaro Mitsudo, Toshitaka Idehara

    Journal of Infrared, Millimeter, and Terahertz Waves   42 ( 4 )   409 - 415   2021.2

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    Publishing type:Research paper (scientific journal)   Publisher:Springer Science and Business Media LLC  

    DOI: 10.1007/s10762-021-00774-x

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    Other Link: https://link.springer.com/article/10.1007/s10762-021-00774-x/fulltext.html

  • Dynamic Viscoelasticity Analysis of AP/HTPB Composite Propellant Slurry with Focusing on Gap Parameter between AP Particles Reviewed

    Kansei TERASHIMA, Akihiro IWASAKI, Makoto R. ASAKAWA, Hiroto HABU, Soichiro YAMAGUCHI

    TRANSACTIONS OF THE JAPAN SOCIETY FOR AERONAUTICAL AND SPACE SCIENCES, AEROSPACE TECHNOLOGY JAPAN   19 ( 2 )   266 - 269   2021

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    Publishing type:Research paper (scientific journal)   Publisher:Japan Society for Aeronautical and Space Sciences  

    DOI: 10.2322/tastj.19.266

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  • Azimuthal angle dependence of terahertz emission intensity from epitaxial magnetic heterostructures

    M. Nakajima, S. Tetsukawa, S. Liu, T. Matsunaga, V. K. Mag-Usara, V. C. Agulto, M. Kohda, R. Thompson, H. Gamou, Y. Du, S. Karube, J. Nitta, M. Asakawa, M. Tani

    Optics InfoBase Conference Papers   2021

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    Publishing type:Research paper (international conference proceedings)  

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  • Electro-Optic Detection for Terahertz Electric Field Contraction around Relativistic Electron Beams

    M. Ota, K. Kan, S. Komada, Y. Arikawa, V. C. Agulto, V. K. Mag-Usara, Y. W. Wang, M. R. Asakawa, Y. Sakawa, T. Matsui, M. Nakajima

    Optics InfoBase Conference Papers   2021

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    Publishing type:Research paper (international conference proceedings)  

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  • Terahertz Radiation from Combined Metallic Slit Arrays Reviewed

    Dazhi Li, Makoto Nakajima, Masahiko Tani, Jinfeng Yang, Hideaki Kitahara, Masaki Hashida, Makoto Asakawa, Wenxin Liu, Yanyu Wei, Ziqiang Yang

    Scientific Reports   9 ( 1 )   2019.5

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    Publishing type:Research paper (scientific journal)   Publisher:Springer Science and Business Media LLC  

    Abstract

    We report an approach to efficiently generate terahertz radiation from a combined periodic structure. The proposed configuration is composed of two metallic slit arrays deliberately designed with different periodic length, slit width and depth. We found that the combination of the two slit arrays could provide special electromagnetic modes, which exhibit nonradiative property above the surface of one slit array and radiative property inside the other one. An electron beam holding proper energy could resonate with those modes to generate strong and directional electromagnetic radiations in the terahertz regime, indicating that the approach has the potential in developing high-performance terahertz radiation sources.

    DOI: 10.1038/s41598-019-43072-2

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    Other Link: https://www.nature.com/articles/s41598-019-43072-2

  • Smith-Purcell radiation emitted by pico-second electron bunches from a 30 keV photo-electron gun

    M. R. Asakawa, S. Yamaguchi

    Proceedings of the 39th International Free-Electron Laser Conference, FEL 2019   66 - 68   2019

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    Language:English   Publishing type:Research paper (international conference proceedings)   Publisher:JACoW Publishing  

    DOI: 10.18429/JACoW-FEL2019-TUP012

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  • Development of Terahertz Radiation Source With Slit-Array Structure Reviewed

    Dazhi Li, T. N. K. Phan, K. Kato, M. Nakajima, M. R. Asakawa, M. Hashida, M. Tani, W. Liu, Y.Wei

    Scientific Reports   9   6804-1 - 6804-7   2018.9

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1109/IRMMW-THz.2018.8510392

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  • Coherent radiation at the fundamental frequency by a Smith-Purcell free-electron laser with dielectric substrate Reviewed

    D. Li, Y. Wang, M. Nakajima, M. Tani, M. Hashida, M. R. Asakawa, Y. Wei, S. Miyamoto

    APPLIED PHYSICS LETTERS   110 ( 15 )   151108 - 151108   2017.4

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    DOI: 10.1063/1.4980046

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  • Coherent Smith-Purce radiation emitted by electron bunches produced by photo injector Reviewed

    26 ( 1 )   50 - 55   2016.8

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    Language:Japanese  

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  • Electron Guns for Free-Electron Lasers Reviewed

    Asakawa Makoto R., Yamaguchi Soichiro, Kusaba Mitsuhiro, Tsunawaki Yoshiaki

    IEEJ Transactions on Fundamentals and Materials   134 ( 1 )   22 - 25   2014

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    Language:Japanese   Publisher:The Institute of Electrical Engineers of Japan  

    Developments of two types of the electron gun are presented. One is a compact DC electron gun using Field Emitter Array (FEA) as the <i>cold</i> cathode, the other is a photoinjector which outputs sub-pico second electron beam pulse. The FEA electron gun achieved to producing a 2 mA/50 kV electron beam. The photoinjector experiments revealed an exotic space-charge effect on the ultra-shot electron beam pulse.

    DOI: 10.1541/ieejfms.134.22

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    Other Link: https://jlc.jst.go.jp/DN/JALC/10027425656?from=CiNii

  • Analysis of the double-slab type Cherenkov free-electron laser resonator

    Hiroya Yoshida, Naoya D. Munemoto, Takahiro Kimura, Takumi Sano, Soichiro Yamaguchi, Makoto R. Asakawa

    Electronics and Communications in Japan   97 ( 6 )   16 - 23   2014

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    Language:English   Publishing type:Research paper (scientific journal)   Publisher:John Wiley and Sons Inc.  

    DOI: 10.1002/ecj.11554

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  • Analysis of the Double-slab Type Cherenkov Free-electron Laser Resonator Reviewed

    YOSHIDA Hiroya, MUNEMOTO Naoya D., KIMURA Takahiro, SANO Takumi, YAMAGUCHI Soichiro, ASAKAWA Makoto R.

    IEEJ Transactions on Fundamentals and Materials   132 ( 9 )   741 - 746   2012.9

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    Language:Japanese   Publisher:The Institute of Electrical Engineers of Japan  

    The compact Cherenkov free-electron laser operating in the terahertz spectral range is being developed. The analysis of the double-slab type optical resonator clarified the resonant frequency, the small signal gain and the saturation power of the device. One dimensional simulation code predicted a small signal gain of 6% with a 50kV/3.6mA electron beam. Saturation power was estimated to be 90mW. The out-coupling structure of the resonator was designed by using a 3D simulation code. A transmittivity 3.0% and spread angle 0.4rad was predicted.

    DOI: 10.1541/ieejfms.132.741

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    Other Link: https://jlc.jst.go.jp/DN/JALC/10008370364?from=CiNii

  • Growth rate and start current in Smith-Purcell free-electron lasers Reviewed

    D. Li, M. Hangyo, Y. Tsunawaki, Z. Yang, Y. Wei, S. Miyamoto, M. R. Asakawa, K. Imasaki

    APPLIED PHYSICS LETTERS   100 ( 19 )   191101   2012.5

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1063/1.4711803

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  • Super-radiant Smith-Purcell radiation from periodic line charges Reviewed

    D. Li, M. Hangyo, Y. Tsunawaki, Z. Yang, Y. Wei, S. Miyamoto, M. R. Asakawa, K. Imasaki

    NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT   674   20 - 23   2012.5

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1016/j.nima.2012.01.039

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  • Magnetic properties of cobalt plate compared with iron and nickel plates Reviewed

    Yoshiaki Tsunawaki, Nobuhisa Ohigashi, Makoto R. Asakawa

    Japanese Journal of Applied Physics   51 ( 2 )   2012.2

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    DOI: 10.1143/JJAP.51.028002

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  • Theoretical study of smith-purcell free-electron lasers Reviewed

    D. Li, K. Imasaki, M. Hangyo, Z. Yang, Y. Wei, S. Miyamoto, M. R. Asakawa, Y. Tsunawaki

    FEL 2012 - 34th International Free Electron Laser Conference   85 - 87   2012

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  • Smith-Purcell radiation from a grating of negative-index material Reviewed

    D. Li, M. Hangyo, Z. Yang, M. R. Asakawa, S. Miyamoto, Y. Tsunawaki, K. Takano, K. Imasaki

    NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT   637 ( 1 )   135 - 137   2011.5

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1016/j.nima.2011.02.022

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  • Improve growth rate of Smith-Purcell free-electron laser by Bragg reflector Reviewed

    D. Li, Z. Yang, Y. Tsunawaki, M. R. Asakawa, M. Hangyo, S. Miyamoto, K. Imasaki

    APPLIED PHYSICS LETTERS   98 ( 21 )   211503-1 - ~3   2011.5

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    DOI: 10.1063/1.3594243

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  • Smith-purcell free electron laser with Bragg reflector

    D. Li, Z. Yang, Y. Tsunawaki, M. R. Asakawa, M. Hangyo, S. Miyamoto, K. Imasaki

    FEL 2011 - 33rd International Free Electron Laser Conference   24 - 27   2011

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  • Smith-purcell radiation with negative-index material

    D. Li, M. Hangyo, Z. Yang, Y. Tsunawaki, M. R. Asakawa, S. Miyamoto, K. Takano, K. Imasaki

    FEL 2011 - 33rd International Free Electron Laser Conference   20 - 23   2011

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  • Space-charge limitation of a femtosecond photoinjector Reviewed

    Hiroko Yamamoto, Hiroaki Hamabe, Shintaro Sone, Soichiro Yamaguchi, Makoto R. Asakawa

    International Journal of Optics   2011   2011

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1155/2011/714265

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  • Output of Super-radiant Smith-Purcell radiation: A theoretical analysis Reviewed

    D. Li, Z. Shi, Z. Yang, M. R. Asakawa, G. Huo, Y. Tsunawaki, K. Imasaki

    JOURNAL OF INFRARED MILLIMETER AND TERAHERTZ WAVES   31 ( 11 )   1271 - 1277   2010.11

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1007/s10762-010-9711-3

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  • Nonlinear analysis of Cherenkov free-electron laser with double-slab structure

    D. Li, G. Huo, K. Imasaki, M. Asakawa, Y. Tsunawaki

    Infrared Physics and Technology   53 ( 3 )   204 - 207   2010.5

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1016/j.infrared.2009.11.007

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  • Photo-electron gun generating sub-pico second bunch

    Makoto R. Asakawa, Shintaro Sone, Hiroko Yamamoto, Ryota Sonomura, Soichiro Yamaguch, Yoshiaki Tsunawaki

    IRMMW-THz 2010 - 35th International Conference on Infrared, Millimeter, and Terahertz Waves, Conference Guide   2010

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    Language:English   Publishing type:Research paper (international conference proceedings)  

    DOI: 10.1109/ICIMW.2010.5613066

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  • Suitable Property of Nickel Plate for Adiabatic Transition Part in Solenoid-Induced Wiggler Reviewed

    Nobuhisa Ohigashi, Yoshiaki Tsunawaki, Makoto R. Asakawa

    JAPANESE JOURNAL OF APPLIED PHYSICS   48 ( 11 )   114504-1~8   2009.11

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1143/JJAP.48.114504

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  • Analysis on the gain of a compact cherenkov free-electron laser

    D. Li, K. Imasaki, M. Asakawa

    FEL 2009 - 31st International Free Electron Laser Conference   398 - 401   2009

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  • A compact electron gun using field emitter array Reviewed

    M. R. Asakawa, A. Ikeda, N. Miyabe, S. Yamaguchi, M. Kusaba, Y. Tsunawaki

    THIN SOLID FILMS   517 ( 4 )   1493 - 1496   2008.12

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    DOI: 10.1016/j.tsf.2008.09.026

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  • テラヘルツ波自由電子レーザー Reviewed

    綱脇惠章, 浅川 誠

    日本赤外線学会誌   17 ( 2 )   13 - 24   2008

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  • Development of a compact cherenkov free-electron laser operating in terahertz wave RANGE

    Nozomu Miyabe, Akira Ikeda, Makoto R. Asakawa, Mitsuhiro Kusaba, Yoshiaki Tsunawaki

    29th International Free Electron Laser Conference, FEL 2007   406 - 408   2007

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  • Design of a compact Cherenkov free-electron laser Reviewed

    Makoto R. Asakawa, Nozumu Miyabe, Katsumi Nakao, Akira Ikeda, Mitsuhiro Kusaba, Yoshiaki Tsunawaki

    EIGHTH IEEE INTERNATIONAL VACUUM ELECTRONICS CONFERENCE   301 - +   2007

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  • Development of a compact cherenkov free-electron laser

    Makoto R. Asakawa, Nozomu Miyabe, Akira Ikeda, Yoshiaki Tsunawaki

    IRMMW-THz2007 - Conference Digest of the Joint 32nd International Conference on Infrared and Millimetre Waves, and 15th International Conference on Terahertz Electronics   638 - 639   2007

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    Language:English   Publishing type:Research paper (international conference proceedings)   Publisher:IEEE Computer Society  

    DOI: 10.1109/icimw.2007.4516661

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  • Development of a compact cherenkov free-electron laser in terahertz spectral range

    M. R. Asakawa, K. Nakao, N. Miyabe, M. Kusaba, Y. Tsunawaki

    28th International Free Electron Laser Conference, FEL 2006   364 - 367   2006

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  • Adjustment of adiabatic transition magnetic field of solenoid-induced helical wiggler

    Yoshiaki Tsunawaki, Nobuhisa Ohigashi, Makoto Asakawa, Kazuo Imasaki

    Proceedings of the 27th International Free Electron Laser Conference, FEL 2005   191 - 194   2005

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  • Generation of short-pulse far-infrared light from electrons undergoing half-cyclotron rotation

    M. R. Asakawa, T. Marusaki, M. Hata, Y. Tsunawaki, K. Imasaki

    Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment   528 ( 1-2 )   152 - 156   2004.8

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    DOI: 10.1016/j.nima.2004.04.036

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  • Status report and. biomedical applications of the institute of FEL, Osaka University Reviewed

    K Awazu, M Asakawa, H Horiike

    NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT   507 ( 1-2 )   547 - 551   2003.7

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    DOI: 10.1016/S0168-9002(03)01864-3

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  • Magnetic field analysis of hybrid helical wiggler with multiple poles per period Reviewed

    Y Tsunawaki, N Ohigashi, M Asakawa, K Imasaki, K Mima

    NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT   507 ( 1-2 )   166 - 169   2003.7

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1016/S0168-9002(03)00864-7

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  • Dynamics of low coupling parameter free-electron laser oscillator Reviewed

    H Nishiyama, M Asakawa, Y Tsunawaki, M Heya, K Awazu, K Imasaki

    NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT   507 ( 1-2 )   74 - 78   2003.7

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1016/S0168-9002(03)00841-6

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  • Gamma ray generation through a 1.064 mu m laser beam

    D Li, K Imasaki, M Aoki, S Miyamota, S Amano, T Mochizuki, M Asakawa, S Ishii

    INTERNATIONAL JOURNAL OF INFRARED AND MILLIMETER WAVES   24 ( 2 )   211 - 215   2003.2

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1023/A:1021842720371

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  • A 100 MW far-infrared free-electron laser driven by a 180 MeV RF-linac Reviewed

    M Asakawa, H Nishiyama, K Gotoda, N Ohigashi, Y Tsunawaki, K Imasaki

    NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT   483 ( 1-2 )   286 - 290   2002.5

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1016/S0168-9002(02)00329-7

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  • Status of the Institute of Free-Electron Laser, Osaka University Reviewed

    H Horiike, N Tsubouchi, K Awazu, M Asakawa, M Heya

    Jpn. J. Appl. Phys.,Suppl.   41 ( 1 )   10 - 14   2002.2

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  • Doppler-shifted cyclotron absorption of electron Bernstein waves via N-parallel to-upshift in a Tokamak plasma Reviewed

    T Maekawa, T Kobayashi, S Yamaguchi, K Yoshinaga, H Igami, M Uchida, H Tanaka, M Asakawa, Y Terumichi

    PHYSICAL REVIEW LETTERS   86 ( 17 )   3783 - 3786   2001.4

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    DOI: 10.1103/PhysRevLett.86.3783

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  • Polarizers with non-rectangular grooves for high power millimeter waves Reviewed

    K Nagasaki, Y Itoh, K Sakamoto, T Obiki, T Maekawa, H Morioka, T Terumichi, M Asakawa, MG Shats, H Punzmann

    FUSION ENGINEERING AND DESIGN   53 ( 1月4日 )   491 - 497   2001.1

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    DOI: 10.1016/S0920-3796(00)00525-1

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  • ECR plasma in a stuffed cusp field

    Masaki Uchida, Nobuaki Kaji, Makoto Asakawa, Hitoshi Tanaka, Takashi Maekawa, Yasushi Terumichi

    Fusion Technology   39 ( 1 T )   187 - 190   2001

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    Language:English   Publishing type:Research paper (scientific journal)   Publisher:ANS  

    DOI: 10.13182/fst01-a11963438

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  • Production of Pure Electron Plasmas Using a Field Emitter Array Reviewed

    Hitoshi Tanaka, Tatsuya Sodekoda, Takashi Maekawa, Souichirou Yamaguchi, Makoto Asakawa, Yasushi Terumichi

    Jpn. J. Appl. Phys.   Vol.39, pp.602 ~ 606   2000

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  • Applications of enhanced Compton scattering in a supercavity

    M Fujita, A Moon, E Yasuda, T Asakuma, T Minamiguchi, M Asakawa, J Chen, K Imasaki, C Yamanaka, PK Roy, K Mima, S Nakai, N Nakao, T Ishida, T Watanabe, N Ohigashi, Y Tsunawaki, Y Yamazaki, M Sakuma

    NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT   375 ( 1-3 )   ABS14 - ABS16   1996.6

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    DOI: 10.1016/0168-9002(95)01459-4

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  • 13 nm advanced SASE free electron laser with a quasi-stable optical klystron configuration Reviewed

    JZ Chen, K Imasaki, M Fujita, M Asakawa, C Yamanaka, K Mima, S Nakai

    NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT   375 ( 1-3 )   299 - 303   1996.6

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  • Simulation of a waveguide FEL oscillator using an RF linac Reviewed

    M Goto, S Kuruma, K Mima, M Asakawa, K Imasaki, C Yamanaka

    NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT   375 ( 1-3 )   207 - 209   1996.6

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  • Suppression and control of leakage field in electromagnetic helical microwiggler Reviewed

    N Ohigashi, T Ishida, Y Tsunawaki, K Imasaki, M Fujita, M Asakawa, S Kuruma, C Yamanaka, S Nakai, K Mima

    NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT   375 ( 1-3 )   469 - 473   1996.6

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  • Compact high brightness radiation sources Reviewed

    K Imasaki, M Fujita, J Chen, M Asakawa, S Nakai, C Yamanaka

    LASER INTERACTION AND RELATED PLASMA PHENOMENA   ( 369 )   820 - 829   1996

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  • RF-linac driven VUV free electron laser based on SASE Reviewed

    J Chen, M Fujita, M Asakawa, K Imasaki, C Yamanaka, K Mima, S Nakai

    LASER INTERACTION AND RELATED PLASMA PHENOMENA   ( 369 )   830 - 835   1996

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  • Development of high-brightness photon sources using enhanced compton scattering in the supercavity Reviewed

    M Fujita, T Asakuma, A Moon, T Minamiguchi, M Asakawa, J Chen, K Imasaki, C Yamanaka, PK Roy, S Nakai, N Ohigashi, Y Tsunawaki

    LASER INTERACTION AND RELATED PLASMA PHENOMENA   ( 369 )   814 - 819   1996

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  • POP EXPERIMENTS OF THE PHOTON E-BEAM INTERACTION IN THE SUPERCAVITY Reviewed

    M FUJITA, T ASAKUMA, J CHEN, K IMASAKI, C YAMANAKA, M ASAKAWA, N INOUE, K MIMA, S NAKAI, T AGARI, N NAKAO, A MOON, N OHIGASHI, T MINAMIGUCHI, Y TSUNAWAKI

    NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT   358 ( 1-3 )   524 - 527   1995.4

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    DOI: 10.1016/0168-9002(94)01582-1

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  • COMPACT HIGH-BRIGHTNESS RADIATION SOURCES Reviewed

    J CHEN, K IMASAKI, M FUJITA, M ASAKAWA, T ASAKUMA, S NAKAI, C YAMANAKA

    NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT   358 ( 1-3 )   14 - 17   1995.4

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  • HARMONICS OF THOMSON BACKSCATTERED X-RAYS Reviewed

    JH CHEN, M FUJITA, K IMASAKI, C YAMANAKA, M ASAKAWA, T YAMAMOTO, S NAKAI, T ASAKUMA

    JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS SHORT NOTES & REVIEW PAPERS   33 ( 6A )   3459 - 3463   1994.6

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  • PHOTOINJECTOR FOR 6 MEV S-BAND RF LINAC AT ILT ILE OSAKA-UNIVERSITY Reviewed

    M FUJITA, K IMASAKI, J CHEN, S KURUMA, H FURUKAWA, C YAMANAKA, M ASAKAWA, N SAKAMOTO, T YAMAMOTO, N INOUE, S NAKAI, K NAGAMI, Y TSUNAWAKI, T AGARI, T ASAKUMA, N OHIGASHI

    NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT   341 ( 1-3 )   ABS35 - ABS36   1994.3

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  • DEVELOPMENT OF A COMPACT HIGH-BRIGHTNESS X-RAY SOURCE Reviewed

    J CHEN, K IMASAKI, M FUJITA, C YAMANAKA, M ASAKAWA, S NAKAI, T ASAKUMA

    NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT   341 ( 1-3 )   346 - 350   1994.3

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  • DEVELOPMENT OF A COMPACT FEL SYSTEM WITH A WIDE WAVELENGTH RANGE Reviewed

    K IMASAKI, M ASAKAWA, J CHEN, N SAKAMOTO, T YAMAMOTO, N OHIGASHI, Y TSUNAWAKI, K MIMA, S KURUMA, S NAKAI, C YAMANAKA

    NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT   331 ( 1-3 )   232 - 234   1993.7

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  • HIGHER HARMONIC-GENERATION IN A MODIFIED WIGGLER MAGNETIC-FIELD Reviewed

    M ASAKAWA, K MIMA, S NAKAI, K IMASAKI, C YAMANAKA

    NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT   318 ( 1-3 )   538 - 545   1992.7

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  • レーザー装置 その1

    車信 一郎, 鳴尾 誠浩, 三間 圀興, 大東 延久, 中井 貞雄, 山中 千代衛, 岡崎 徹, 今崎 一夫, 秋葉 龍郎, 綱脇 恵章, 小林 明, 川田 豊, 大谷 英成, 吉田 昌只, 青木 宗和, 森井 健, 宮本 修治, 細田 義門, 浅川 誠, 安芸 寿彦, 河村 良行, 豊田 浩一, 李 炳鐡, 松島 恭治, 東田 憲佳, 曽我部 伸, 村井 昭, 有安 富雄, 葛本 昌樹, 竹中 裕司, 森安 雅治, 安井 公治, 畑中 秀和, 河原 暢郎, 緑川 克美, 田代 英夫, 小原 實, 外園 博一, 小林 直樹, 志水 裕一, 土志田 実, 片田 毅, 三木 弘次郎, 松島 朋史, 末田 正, 西前 順一, 吉沢 憲治, 熊本 健二, 八木 重典, 小方 大成, 鎌上 則夫, 谷脇 学, 佐藤 俊一, 和仁 郁雄, 尾角 英毅, 室 幹雄, 藤井 洋郎, 中尾 雅俊, 竹田 哲也, 出口 博史, 藤原 閲夫, 井澤 靖和, 渡辺 郁男, 林 和夫, 野田 悦夫, 鈴木 節雄, 小川 朋子, 井関 康, 森宮 脩, 小林 徳康, 木村 博信, 小長井 主税, 白山 新平, 宮沢 竜雄, 高橋 知幸, 青木 延忠, 藤原 淳史, 深澤 輝一郎, 田中 祥夫, 石橋 誠, 佐藤 俊雄, 興 雄司, 出羽 達也, 田代 英二, 本田 親久, 前田 三男, 長谷川 芳夫, 二見 博, 泉 順, 松田 桂一, 大向 雅人, 本越 伸二, 川口 誠二, 前川 晴夫, 吉田 英次, 松本 康孝, 小松 由和, 中原 秀起, 葛生 伸, 村原 正隆, 滝沢 本承, 伊沢 孝男, 山村 史彦, 内村 龍二, 橋本 至, 薬王 輝雄, 大和田野 芳郎, 松本 裕治, 矢野 雅昭

    レーザー研究   19   31 - 60   1991

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    DOI: 10.2184/lsj.19.Supplement_31

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  • EXPERIMENTAL STUDIES OF FAR INFRARED FREE-ELECTRON LASER ON INDUCTION ACCELERATOR Reviewed

    T AKIBA, M MOKUNO, H YOSHIOKA, H OHTANI, M ASAKAWA, S TANIOKA, S MIYAMOTO, K IMASAKI, K MIMA, S KURUMA, N OHIGASHI, Y TSUNAWAKI, C YAMANAKA, S NAKAI

    PROCEEDINGS OF THE EIGHTH INTERNATIONAL CONFERENCE ON HIGH-POWER PARTICLE BEAMS ( BEAMS 90 ), VOLS 1 AND 2   1111 - 1116   1991

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  • Single-shot spatio-temporal measurement of relativistic electron beams by electro-optic sampling

    Masato Ota, Koichi Kan, Youwei Wang, Verdad C. Agulto, Yasunobu Arikawa, Makoto R. Asakawa, Youichi Sakawa, Tatsunosuke Matsui, Makoto Nakajima

    Real-time Measurements, Rogue Phenomena, and Single-Shot Applications IX   2024.3

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    Publishing type:Research paper, summary (international conference)   Publisher:SPIE  

    DOI: 10.1117/12.3005230

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  • Ultrafast Dynamics of Coulomb Electric Field Contraction by Relativistic Electron Bunch

    M. Nakajima, M. Ota, K. Kan, Y.W. Wang, V. C. Agulto, K. Kato, Y. Arikawa, T. Matsui, M.R. Asakawa

    2023 48th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz)   2023.9

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    Publishing type:Research paper, summary (international conference)   Publisher:IEEE  

    DOI: 10.1109/irmmw-thz57677.2023.10298935

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  • Observation of Third Harmonic Generation in Two-Dimensional MoS<sub>2</sub> Semiconductor Using Terahertz Free-Electron Laser

    Youwei Wang, Masato Ota, Verdad C. Agulto, Valynn Katrine Mag-Usara, Mikihiko Nishitani, Goro Isoyama, Makoto Asakawa, Makoto Nakajima

    2022 47th International Conference on Infrared, Millimeter and Terahertz Waves (IRMMW-THz)   2022.8

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    Publishing type:Research paper, summary (international conference)   Publisher:IEEE  

    DOI: 10.1109/irmmw-thz50927.2022.9895747

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  • Laser-Induced Periodic Surface Structures on Ge2Sb2Te5 Irradiated by Terahertz Free-Electron Laser Vortex Beam

    Youwei Wang, Sadashi Segawa, Tomoki Shimizu, Masato Ota, Verdad C. Agulto, Valynn Katrine Mag-Usara, Katsuhiko Miyamoto, Takashige Omatsu, Kotaro Makino, Junji Tominaga, Goro Isoyama, Makoto Asakawa, Makoto Nakajima

    2022 47th International Conference on Infrared, Millimeter and Terahertz Waves (IRMMW-THz)   2022.8

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    Publishing type:Research paper, summary (international conference)   Publisher:IEEE  

    DOI: 10.1109/irmmw-thz50927.2022.9895678

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  • Spintronic Terahertz Emission and Magnetic Anisotropy of Epitaxial Platinum Heterostructures on MgO(110) Substrate

    Shoei Tetsukawa, Shuang Liu, Valynn Katrine Mag-Usara, Verdad Canila Agulto, Makoto Kohda, Ryan Thompson, Hiromu Gamou, Ye Du, Shutaro Karube, Junsaku Nitta, Masahiko Tani, Makoto Asakawa, Makoto Nakajima

    2021 46th International Conference on Infrared, Millimeter and Terahertz Waves (IRMMW-THz)   2021.8

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    DOI: 10.1109/irmmw-thz50926.2021.9566960

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  • Terahertz emission amplitude-based 2D mapping of the Fe thickness profile in Fe/Pt spintronic heterostructure

    Y. Koike, S. Tetsukawa, M. Nishitani, H. Kitahara, V. K. P. Mag-usara, M. Asakawa, M. Yoshimura, M. Tani, M. Nakajima

    2020 45th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz)   2020.11

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    DOI: 10.1109/irmmw-thz46771.2020.9370658

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  • Coherent Smith-Purce radiation emitted by electron bunches produced by photo injector

    26 ( 1 )   50 - 55   2016.8

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  • Amplification Process of Cherenkov Free-Electron Laser Driven by Low-Energy Electron Beam

    ASAKAWA Makoto

    88 ( 10 )   594 - 598   2012.10

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  • Terahertz radiation source based on Cherenkov radiation

    ASAKAWA Makoto R., YAMAGUCHI Soichiro, SEKI Masako, TSUNAWAKI Yoshiaki

    2010 ( 1 )   7 - 12   2010.1

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  • 28pZB-11 Development of compact cherenkov FEL sources

    Yamaguchi S.

    Meeting abstracts of the Physical Society of Japan   64 ( 1 )   112 - 112   2009.3

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  • Applications of infrared free electron laser for the research on semiconductor

    Journal of the Japan Society of Infraed Science and Technolog   16 ( 2 )   76 - 85   2007.10

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  • 25aWM-3 Magnetic Field Analysis of Hybrid Helical Wiggler with Multi Poles per Period

    Tsunawaki Yoshiaki, Ohigashi Nobuhisa, Asakawa Makoto, Imasaki Kazuo, Mima Kunioki

    Meeting abstracts of the Physical Society of Japan   57 ( 1 )   131 - 131   2002.3

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  • 光源

    日本赤外線学会誌   12   7 - 11   2002

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  • A FIR Free-Electron Laser using the Photocathode/RFgun accelerator

    Asakawa M.

    Meeting abstracts of the Physical Society of Japan   56 ( 1 )   146 - 146   2001.3

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  • Low aspect ratio ECR toroidal plasma (LATE)

    Taoka Hidekazu

    Meeting abstracts of the Physical Society of Japan   55 ( 1 )   155 - 155   2000.3

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  • Peripheral heating of plasma using electron Bernstein wave

    Kobayashi Tsutomu

    Meeting abstracts of the Physical Society of Japan   55 ( 1 )   134 - 134   2000.3

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  • ECR Plasma in a stuffed cusp field

    Uchida Masaki

    Meeting abstracts of the Physical Society of Japan   55 ( 1 )   183 - 183   2000.3

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  • ECR plasma in quadrupole magnetic field

    Asakawa M.

    Meeting abstracts of the Physical Society of Japan   55 ( 1 )   182 - 182   2000.3

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  • Diocotron Oscillation in Pure Electron Plasmas with Multi-Pulse Stacking Method

    Uchida H.

    Meeting abstracts of the Physical Society of Japan   55 ( 1 )   161 - 161   2000.3

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  • Suppression of a pressure driven m=1 mode in a lower hybrid current drive plasma by electron cyclotron heating in the WT-3 tokamak

    S Yoshimura, M Watanabe, K Tanabe, A Nakayama, M Asakawa, T Maehara, M Nakamura, H Tanaka, T Maekawa, Y Terumichi

    PHYSICS OF PLASMAS   7 ( 1 )   276 - 282   2000.1

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  • 26aYN-2 Cyclotron Resonance in Pure Electron Plasmas

    Tanaka H

    Meeting abstracts of the Physical Society of Japan   54 ( 2 )   168 - 168   1999.9

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  • 27aYN-7 Production of low aspect ratio ECR toroidal plasma

    Taoka Hidekazu

    Meeting abstracts of the Physical Society of Japan   54 ( 2 )   185 - 185   1999.9

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  • 27aYN-6 Plasma Production with a Spheroidal ECR Surface

    Uchida Masaki

    Meeting abstracts of the Physical Society of Japan   54 ( 2 )   185 - 185   1999.9

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  • 26aYG-5 Soft X-ray Computerized Tomography of Sawteeth on Three Minor Cross-Sections in WT-3

    Yamaguchi Souichirou

    Meeting abstracts of the Physical Society of Japan   54 ( 2 )   165 - 165   1999.9

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  • Electron cyclotron resonance plasma produced with a closed spheroidal electron cyclotron resonance surface in a simple cusp field

    M Uchida, S Fukumoto, M Asakawa, H Tanaka, T Maekawa, Y Terumichi

    JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS   38 ( 8A )   L885 - L887   1999.8

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  • Plasma Production with a Spheroidal ECR Surface in a simple cusp field

    UCHIDA Masaki, ASAKAWA Makoto, TANAKA Hitoshi, MAEKAWA Takashi, TERUMICHI Yasushi

    1999 ( 19 )   43 - 47   1999.6

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  • 31p-XM-2 ECR plasma in a cusp field II

    Uchida Masaki

    Meeting abstracts of the Physical Society of Japan   54 ( 1 )   842 - 842   1999.3

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  • 30p-XL-6 Electron cyclotron current drive experiment with an elliptically polarized micro-wave injection

    Asakawa Makoto

    Meeting abstracts of the Physical Society of Japan   54 ( 1 )   821 - 821   1999.3

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  • 30p-XL-5 Simultaneous mesurement of soft X-ray computer tomography in the plural cross-section

    Yamaguchi Souichirou

    Meeting abstracts of the Physical Society of Japan   54 ( 1 )   821 - 821   1999.3

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  • 31p-XM-1 ECR plasma in the Cusp magnetic field by Permanent Magnet

    Hyodo Y., Moriwaki M., Yamashita T., Uchida M., Asakawa M., Tanaka H., Maekawa T., Terumichi Y.

    Meeting abstracts of the Physical Society of Japan   54 ( 1 )   842 - 842   1999.3

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  • On-Axis Current Drive Experiment Using a Quasi-Optical Electron Cyclotron Heating/Current Drive System on the WT-3 Tokamak

    ASAKAWA Makoto, HIRAGI Toshiyuki, YAMAGUCHI Souichirou, YOSHINAGA Kazuhiro, IGAMI Hiroe, TERUMICHI Yasushi, UCHIDA Masaki, KOBAYASHI Tutomu, TANAKA Hitoshi, MAEKAWA Takashi, NAKAMURA Masahiko, OHKUBO Kunizo, KUBO Shin, NAGASAKI Kazunobu

    Kakuyūgō kenkyū   75 ( 6 )   732 - 740   1999

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    An 89 GHz quasi-optical Electron Cyclotron Heating (ECH)/Current Drive (ECCD) system has been installed on the WT-3 tokamak. In order to investigate the effect of localized ECH/ECCD on the MHD instabilities, this system is designed to focus the micro-wave beam into a small focal spot with the radius about 1cm in the plasma center. This radius is smaller than the inversion radius of the sawtooth oscillation observed in WT-3. Utilizing this feature, the experiment on control of sawtooth oscillation by on-axis current drive have been performed. Stabilization of sawtooth by counter-ECCD is observed when the power deposition is localized inside the inversion radius. This result may be due to the decrease in current density near the magnetic axis. For the optimal coupling of the micro-wave to obliquely propagating waves at the plasma surface, a linear-elliptical polarization converter has been installed recently. This polarization converter may raise the effective current drive efficiency by a factor of 1.5 for the injected micro-wave power.

    DOI: 10.1585/jspf.75.732

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    Other Link: http://dl.ndl.go.jp/info:ndljp/pid/10453640

  • On-Axis Current Drive Experiment Using a Quasi-Optical Electron Cyclotron Heating/Current Drive system on the WT-3 tokamak

    Makoto ASAKAWA, Toshiuki HIRAGI, Souichirou YAMAGUCHI, Kazuhiro YOSHINAGA, Hiroe IGAMI, Yasushi TERUMICHI, Masaki UCHIDA, Tutomu KOBAYASHI, Hitoshi TANAKA, Takashi MAEKAWA, Masahiko NAKAMURA, Kunizo OHKUBO, Shin KUBO, Kazunobu NAGASAKI

    Journal of Plasma and Fusion Research   75 ( 6 )   732 - 740   1999

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    An 89 GHz quasi-optical Electron Cyclotron Heating (ECH)/Current Drive (ECCD) system has been installed on the WT-3 tokamak. In order to investigate the effect of localized ECH/ECCD on the MHD instabilities, this system is designed to focus the micro-wave beam into a small focal spot with the radius about 1cm in the plasma center. This radius is smaller than the inversion radius of the sawtooth oscillation observed in WT-3. Utilizing this feature, the experiment on control of sawtooth oscillation by on-axis current drive have been performed. Stabilization of sawtooth by counter-ECCD is observed when the power deposition is localized inside the inversion radius. This result may be due to the decrease in current density near the magnetic axis. For the optimal coupling of the micro-wave to obliquely propagating waves at the plasma surface, a linear-elliptical polarization converter has been installed recently. This polarization converter may raise the effective current drive efficiency by a factor of 1.5 for the injected micro-wave power.

    DOI: 10.1585/jspf.75.732

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    Other Link: http://dl.ndl.go.jp/info:ndljp/pid/10453640

  • Formation of Non-neutral Ion Plasmas with the Multi-pulse Stacking Method

    SODEKODA Tatsuya

    Meeting abstracts of the Physical Society of Japan   53 ( 2 )   940 - 940   1998.9

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  • ECR plasma in cusp field

    ASAKAWA Makoto

    Meeting abstracts of the Physical Society of Japan   53 ( 2 )   929 - 929   1998.9

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  • Observation of LHCD fast electrons by ECA

    UTIDA Masaki

    Meeting abstracts of the Physical Society of Japan   53 ( 2 )   960 - 960   1998.9

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  • 300ch Troidal and Poloidal Soft X-ray Computerized Tomography System

    YAMAGUCHI Souichirou

    Meeting abstracts of the Physical Society of Japan   53 ( 2 )   960 - 960   1998.9

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  • ECCD using elliptically polarized rf injection

    HIRAGI Toshiyuki

    Meeting abstracts of the Physical Society of Japan   53 ( 2 )   960 - 960   1998.9

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  • Long Time Confinement of a Non-neutral Plasma by Applying a Tilting Electrostatic Mode

    TANAKA H., SODEKODA T., ENYA T., MAEKAWA T., NAKAMURA M., ASAKAWA M., TERUMICHI Y.

    Meeting abstracts of the Physical Society of Japan   53 ( 2 )   940 - 940   1998.9

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  • Experiments on Long-time Confinement of Nonneutral Electron Plasmas in the NNP-1 Device

    YAMAGUCHI Souichirou

    Meeting abstracts of the Physical Society of Japan   53 ( 1 )   832 - 832   1998.3

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  • Cusp field and ECR plasma

    Meeting abstracts of the Physical Society of Japan   53 ( 1 )   821 - 821   1998.3

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  • Formation of Non-neutral Electron Plasmas with Field Emitter Array Cathode

    SODEKODA Tatsuya

    Meeting abstracts of the Physical Society of Japan   53 ( 1 )   832 - 832   1998.3

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  • Experiments on Solitary Wave Excitation and Propagation in a Non-neutral Electron Plasma

    TANAKA Hitosi

    Meeting abstracts of the Physical Society of Japan   53 ( 1 )   832 - 832   1998.3

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  • Sawtooth control by on-axis electron cyclotron current drive on the WT-3 tokamak

    Proc. 17th IAEA Fusion Energy Conf. , IAEA-cn69/CDP/06   1998

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  • 7a-YM-8 Effect of Rotating-Electric Fields on Confinement of a Nonneutral Electron Plasma

    Yamaguchi Souichirou

    Meeting abstracts of the Physical Society of Japan   52 ( 2 )   935 - 935   1997.9

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  • 7a-YM-7 Experiments on Solitary Waves in a Non-neutral Electron Plasma

    Nagatomo Tamio

    Meeting abstracts of the Physical Society of Japan   52 ( 2 )   934 - 934   1997.9

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  • 国際会議報告第3回「プラズマ中の大電力マイクロ波」国際ワークショップ

    出原 敏孝, 長崎 百伸, 浅川 誠

    プラズマ・核融合学会誌 = Journal of plasma and fusion research   72 ( 12 )   1427 - 1429   1996.12

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  • Multi-order harmonic lasing with a modified wiggler

    M Asakawa, N Nakao, H Ohkubo, T Ishida, T Watanabe, E Yasuda, Y Okuda, M Fujita, J Chen, A Moon, PK Roy, S Kuruma, K Imasaki, K Mima, N Ohigashi, Y Tsunawaki, S Nakai, C Yamanaka

    NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT   375 ( 1-3 )   416 - 419   1996.6

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  • 1p-YL-7 Nonlinear evolution of radiation spectrum in a waveguide FEL oscillator using short electron micropulses

    Goto M., Kuruma S., Mima K., Ohigashi N., Asakawa M., Fujita M., Imasaki K, Yamanaka C.

    Abstracts of the meeting of the Physical Society of Japan. Annual meeting   51 ( 4 )   185 - 185   1996.3

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  • Localized plasma heating experiments using a quasi-optical ECH system on the WT-3 tokamak(共著)

    Proceedings of the 1996 International Conference on Plasma Physics   9I01   1996

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  • 28a-R-4 自由電子レーザー高次高調波発振用ウィグラーの開発

    中尾 直也, 浅川 誠, 陳 基忠, 大久保 宏一, 石田 敬之, 渡辺 剛史, 奥田 喜彦, 大東 延久, 綱脇 恵章, 藤田 雅之, 文 雅司, 安田 英司, ロイ プラビール, 今崎 一夫, 中井 貞雄, 三間 圀興, 山中 千代衛

    日本物理学会講演概要集. 秋の分科会   1995 ( 4 )   165 - 165   1995.9

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  • 28a-R-9 光共振器内でのコンプトン散乱を用いた小型高輝度光源の開発

    文 雅司, 藤田 雅之, 安田 英司, ロイ プラビール, 大久保 宏一, 陳 基忠, 今崎 一夫, 浅川 誠, 中尾 直也, 石田 敬之, 渡辺 剛史, 奥田 喜彦, 大東 延久, 綱脇 恵章, 三間 圀興, 中井 貞雄, 山中 千代衛

    日本物理学会講演概要集. 秋の分科会   1995 ( 4 )   167 - 167   1995.9

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  • 28a-R-5 Development of Electoromagnetic Helical-Micro-Wiggler (V) : Measurement of Test-Wigller for Suppression of Leakage Field

    Ishida T., Ohigashi N., Tunawaki Y., Nakao N., Moon A., Yasuda E., Watanabe T., Okuda Y., Ohkubo K., Roy P., Chen J., Asakawa M., Fujita M., Kuruma S., Imasaki K., Nakai S., Yamanaka C., Mima K.

    Abstracts of the meeting of the Physical Society of Japan. Sectional meeting   1995 ( 4 )   165 - 165   1995.9

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  • 28a-R-6 Study of the high brightness electorn RF-gun with Tungsten photo Cathode

    Abstracts of the meeting of the Physical Society of Japan. Sectional meeting   1995 ( 4 )   166 - 166   1995.9

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  • 28a-R-3 Research on broad-range free-electron laser

    Abstracts of the meeting of the Physical Society of Japan. Sectional meeting   1995 ( 4 )   164 - 164   1995.9

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  • 28a-R-7 Study of VUV free electron laser with DFB cavity

    Chen J.Z., Okubo K., Fujita M., Asakawa M., Moon A., Nakao N., Roy P.K., Ohigashi N., Tsunawaki Y., Mima K., Nakai S., Yamanaka C.

    Abstracts of the meeting of the Physical Society of Japan. Sectional meeting   1995 ( 4 )   166 - 166   1995.9

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  • 28a-R-2 Numerical analysis of coherent radiation in waveguide FEL oscillator.

    Goto M., Kuruma S., Mima K., Ohigashi N., Asakawa M., Fujita M., Imasaki K., Yamanaka C.

    Abstracts of the meeting of the Physical Society of Japan. Sectional meeting   1995 ( 4 )   164 - 164   1995.9

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  • CALCULATION OF A TRANSVERSE OPTICAL-MODE AND DIFFRACTION LOSS IN A SUPERCAVITY

    J CHEN, M FUJITA, M ASAKAWA, K IMASAKI, S NAKAI, C YAMANAKA

    OPTICS COMMUNICATIONS   119 ( 5-6 )   563 - 568   1995.9

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  • Development of Compact FEL System with Photocathode RF Gun

    IMASAKI Kazuo, FUJITA Masayuki, ASAKAWA Makoto

    215   15 - 20   1995.5

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  • DEVELOPMENT OF A MODIFIED WIGGLER FOR HIGHER HARMONIC LASING OF A FREE-ELECTRON LASER

    M ASAKAWA, N INOUE, K MIMA, S NAKAI, K IMASAKI, M FUJITA, J CHEN, C YAMANAKA, N NAKAO, T AGARI, T ASAKUMA, A MOON, N OHIGASHI, T MINAMIGUCHI, Y TSUNAWAKI

    NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT   358 ( 1-3 )   399 - 402   1995.4

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  • Study of short wavelength FELs based on Self Amplified Spontaneous Emission

    1995 ( 11 )   61 - 68   1995.3

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  • 28a-YX-6 スーパーキャビティーを用いた小型X線源の開発(I)

    藤田 雅之, 朝熊 孝, 陳 基忠, 南口 経昭, 文 雅司, 今崎 一夫, 浅川 誠, 井上 尚樹, 上利 達雄, 中尾 直也, プラビール ロイ, 大東 延久, 綱脇 恵章, 三間 圀興, 中井 貞雄, 山中 千代衛

    日本物理学会講演概要集. 年会   50 ( 4 )   131 - 131   1995.3

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  • 28a-YX-4 X線領域自由電子レーザーの自己増幅自然放射(SASE)に関する研究

    陳 基忠, 藤田 雅之, 朝熊 孝, 南口 経昭, 文 雅司, 今崎 一夫, 浅川 誠, 中尾 直也, 井上 尚樹, 上利 達雄, プラビール ロイ, 大東 延久, 綱脇 恵章, 三間 圀興, 中井 貞雄, 山中 千代衛

    日本物理学会講演概要集. 年会   50 ( 4 )   130 - 130   1995.3

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  • 28a-YX-2 コンパクトRF加速器によるFEL実験II

    中尾 直也, 浅川 誠, 藤田 雅之, 陳 基忠, 今崎 一夫, 上利 達雄, 井上 尚樹, 朝熊 孝, 文 雅司, 南口 経昭, 大東 延久, 綱脇 恵章, 三間 圀興, 中井 貞雄, 山中 千代衛

    日本物理学会講演概要集. 年会   50 ( 4 )   129 - 129   1995.3

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  • Analysis of detuning curve of waveguide FEL oscillator using RF linac

    Goto M., Kuruma S., Mima K., Ohigashi N., Asakawa M., Fujita M., Imasaki K., Yamanaka C., Nakai S.

    Abstracts of the meeting of the Physical Society of Japan. Annual meeting   50 ( 4 )   132 - 132   1995.3

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  • Development of Electromagnetic Helical-Micro-Wiggler(IV) : Mechanism of suppression and control for leakage fields

    Ohigashi N., Gotanda Y., Iwahashi T., Yomogi H., Tsunawaki Y., Mima K., Asakawa M., Fujita M., Kuruma S., Imasaki K., Yamanaka C., Nakai S.

    Abstracts of the meeting of the Physical Society of Japan. Annual meeting   50 ( 4 )   129 - 129   1995.3

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  • FEL experiment on a compact RFlinac

    Abstracts of the meeting of the Physical Society of Japan. Annual meeting   50 ( 4 )   130 - 130   1995.3

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  • 28a-YX-5 スーパーキャビティーを用いた小型X線源の開発(II)

    文 雅司, 藤田 雅之, 陳 基忠, 今崎 一夫, 浅川 誠, 井上 尚樹, 上利 達雄, 朝熊 孝, 中尾 直也, プラビール ロイ, 南口 経昭, 大東 延久, 綱脇 恵章, 三間 圀興, 中井 貞雄, 山中 千代衛

    日本物理学会講演概要集. 年会   50 ( 4 )   131 - 131   1995.3

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  • Development of Photocathode RF Gun Driven by a Pulsed Nd : YAG Laser

    FUJITA Masayuki, FURUKAWA Hiroyuki, CHEN Jizhong, IMASAKI Kazuo, YAMANAKA Chiyoe, ASAKAWA Makoto, INOUE Naoki, NAKAI Sadao, AGARI Tatsuo, OHIGASHI Nobuhisa

    The Review of laser engineering   23 ( 1 )   43 - 54   1995.1

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  • Developement of a modified wiggler for higher harmonic lasing of free-electron laser

    15   58 - 58   1995.1

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  • Study of a compact FEL using an rf linac

    15   57 - 57   1995.1

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  • Development of Compact High-Brightness X-ray Sources

    15   63 - 63   1995.1

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  • Development of a Photocathode for Free-Electron Lasers.

    ASAKAWA Makoto, FUJITA Masayuki, IMASAKI Kazuo, YAMANAKA Chiyoe, NAKAI Sadao

    rle   23 ( 1 )   55 - 67   1995

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    We developed a metallic photocathode to produce a high-brightness electron beam for freeelectron lasers. Single crystalline lanthanum hexaboride had a quantum yield exceeding 10<SUP>-4</SUP> at 1000 °C with a frequency-tripled Nd: YAG laser. A tungsten cathode, irradiated by a frequency-doubled Nd: YAG laser, emitted photo-electrons through the two-photon process. The quadratic dependence of the photo-current on the laser intensity could improve the low quantum yield of the multi-photon process. This tungsten photocathode is capable of generating an 1 kA/cm2 electron beam. Futher, heating of these materials could increase the quantum yield. With this technique, these cathodes will generate an electron beam, which has normalized brightness more than 10<SUP>11</SUP>A/m<SUP>2</SUP>/rad<SUP>2</SUP>, in a radio-frequency electron gun.

    DOI: 10.2184/lsj.23.55

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  • 5a-T-6 スーパーキャビティの横モードおよび回折損失

    陳 基忠, 藤田 雅之, 今崎 一夫, 浅川 誠, 朝熊 孝, 井上 尚樹, 上利 達雄, 文 雅可, 中尾 達也, 南口 恵昭, 大東 延久, 綱脇 恵章, 村井 昭, 三間 圀興, 中井 貞雄, 山中 千代衛

    日本物理学会講演概要集. 秋の分科会   1994 ( 4 )   211 - 211   1994.8

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  • 5a-T-4 コンパクトRF加速器による自由電子レーザーの研究 (IV)

    浅川 誠, 井上 尚樹, 上利 達雄, 朝熊 孝, 中尾 直也, 文 雅可, 南口 恵昭, 藤田 雅之, 陳 基忠, 大東 延久, 綱脇 恵章, 今崎 一夫, 三間 圀興, 山中 千代衛, 中井 貞雄

    日本物理学会講演概要集. 秋の分科会   1994 ( 4 )   210 - 210   1994.8

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  • 5a-T-5 スーパーキャビティと電子ビームの相互作用実験

    朝熊 孝, 陳 基忠, 藤田 雅之, 今崎 一夫, 山中 千代衛, 浅川 誠, 井上 尚樹, 三間 圀興, 中井 貞雄, 大東 延久, 上利 達雄, 中尾 直也, 文 雅司, 綱脇 恵章, 南口 恵昭

    日本物理学会講演概要集. 秋の分科会   1994 ( 4 )   210 - 210   1994.8

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  • 5a-T-1 光電陰極RF加速器による自由電子レーザーの研究 (I) : 総括

    藤田 雅之, 陳 基忠, 今崎 一夫, 古川 裕之, 山中 千代衛, 浅川 誠, 井上 尚樹, 三間 圀興, 中井 貞雄, 大東 延久, 朝熊 孝, 上利 達雄, 中尾 直也, 文 雅可, 綱脇 恵章, 南口 経昭

    日本物理学会講演概要集. 秋の分科会   1994 ( 4 )   208 - 208   1994.8

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  • 5a-T-3 光電陰極RF加速器による自由電子レーザーの研究 (III) : 電子ビーム計測

    上利 達雄, 浅川 誠, 井上 尚樹, 藤田 雅之, 大東 延久, 朝熊 孝, 中尾 直也, 文 雅司, 陳 基忠, 綱脇 恵章, 南口 恵昭, 今崎 一夫, 山中 千代衛, 中井 貞雄

    日本物理学会講演概要集. 秋の分科会   1994 ( 4 )   209 - 209   1994.8

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  • 5a-T-7 Simulation of waveguide FEL oscillator using RF linac II

    Goto M, Kuruma S, Mima K, Ohigashi N, Asakawa M, Fujita M, Imasaki K, Yamanaka C, Nakai S

    Abstracts of the meeting of the Physical Society of Japan. Sectional meeting   1994 ( 4 )   211 - 211   1994.8

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  • 5a-T-2 光電陰極RF加速器による自由電子レーザーの研究 (II) : ビームコントロール

    井上 尚樹, 藤田 雅之, 今崎 一夫, 山中 千代衛, 浅川 誠, 上利 達雄, 朝熊 孝, 陳 基忠, 三間 圀興, 中井 貞雄, 中尾 直也, 文 雅司, 大東 延久, 南口 経昭, 綱脇 恵章

    日本物理学会講演概要集. 秋の分科会   1994 ( 4 )   209 - 209   1994.8

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  • USE OF MULTIPHOTON PHOTOELECTRIC PROCESS TO GENERATE A HIGH-BRIGHTNESS ELECTRON-BEAM FOR FREE-ELECTRON LASERS

    M ASAKAWA, K MIMA, S NAKAI, M FUJITA, K IMASAKI, C YAMANAKA

    APPLIED PHYSICS LETTERS   64 ( 16 )   2056 - 2058   1994.4

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  • 31a-YC-10 コンパクトRF加速器による自由電子レーザーの研究(III)

    上利 達雄, 浅川 誠, 酒本 直樹, 山本 達也, 井上 尚樹, 藤田 雅之, 大東 延久, 朝熊 孝, 陳 基忠, 綱脇 恵章, 今崎 一夫, 山中 千代衛, 中井 貞雄

    日本物理学会講演概要集. 年会   49 ( 4 )   244 - 244   1994.3

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  • 31a-YC-12 小型高輝度X線源の開発(I) : レーザーアンジュレータによる高調波X線の発生について

    陳 基忠, 藤田 雅之, 朝熊 孝, 今崎 一夫, 浅川 誠, 山本 達也, 酒本 直樹, 井上 尚樹, 上利 達雄, 梅本 理, 稗田 淳一, 大東 延久, 綱脇 恵章, 村井 昭, 三間 圀興, 中井 貞雄, 山中 千代衛

    日本物理学会講演概要集. 年会   49 ( 4 )   245 - 245   1994.3

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  • 31a-YC-13 小型高輝度軟X線光源の開発(II)

    朝熊 孝, 陳 基忠, 藤田 雅之, 今崎 一夫, 浅川 誠, 酒本 直樹, 山本 達也, 井上 尚樹, 上利 達雄, 大東 延久, 永見 樹義, 綱脇 恵章, 稗田 淳一, 梅本 理, 中井 貞雄

    日本物理学会講演概要集. 年会   49 ( 4 )   245 - 245   1994.3

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  • 31a-YC-5 Simulation of waveguide FEL oscillator using RF linac

    Goto M, Kuruma S, Mima K, Ohhigashi N, Asakawa M, Fujita M, Imasaki K, Yamanaka C, Nakai S

    Abstracts of the meeting of the Physical Society of Japan. Annual meeting   49 ( 4 )   241 - 241   1994.3

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  • 31a-YC-11 Research of Free Electron Laser with Compact RF linac(IV)

    Asakawa M, Sakamoto N, Inoue N, Agari T, Asakuma T, Fujita M, Chen J, Yamamoto T, Umemoto S, Hieda J, Ohigashi N, Tsunawaki Y, Imasaki K, Mima K, Yamanaka C, Nakai S

    Abstracts of the meeting of the Physical Society of Japan. Annual meeting   49 ( 4 )   244 - 244   1994.3

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  • 31a-YC-8 コンパクトRF加速器による自由電子レーザーの研究(I) : 総括

    藤田 雅之, 陳 基忠, 今崎 一夫, 古河 裕之, 車 信一郎, 山中 千代衛, 浅川 誠, 酒本 直樹, 山本 達也, 井上 尚樹, 三間 圀興, 中井 貞雄, 大東 延久, 朝熊 孝, 上利 達雄, 網脇 恵章, 永見 樹義, 梅本 理, 稗田 淳一

    日本物理学会講演概要集. 年会   49 ( 4 )   243 - 243   1994.3

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  • EXPERIMENTAL-STUDY OF A WAVE-GUIDE FREE-ELECTRON LASER USING THE COHERENT SYNCHROTRON-RADIATION EMITTED FROM ELECTRON BUNCHES

    M ASAKAWA, N SAKAMOTO, N INOUE, T YAMAMOTO, K MIMA, S NAKAI, JH CHEN, M FUJITA, K IMASAKI, C YAMANAKA, T AGARI, T ASAKUMA, N OHIGASHI, Y TSUNAWAKI

    APPLIED PHYSICS LETTERS   64 ( 13 )   1601 - 1603   1994.3

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  • A MILLIMETER-RANGE FEL EXPERIMENT USING COHERENT SYNCHROTRON-RADIATION EMITTED FROM ELECTRON BUNCHES

    M ASAKAWA, N SAKAMOTO, N INOUE, T YAMAMOTO, K MIMA, S NAKAI, J CHEN, M FUJITA, K IMASAKI, C YAMANAKA, T AGARI, T ASAKUMA, N OHIGASHI, Y TSUNAWAKI

    NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT   341 ( 1-3 )   72 - 75   1994.3

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  • 14a-N-5 Development of a Compact Laser Undulator X-Ray Source

    Abstracts of the meeting of the Physical Society of Japan. Sectional meeting   1993 ( 4 )   263 - 263   1993.9

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  • 14a-N-3 Research of Free Electron Laser with Compact RF linac (III)

    Sakamoto N., Asakawa M., Yamamoto T., Inoue N., Agari T., Asakuma T., Fujita M., Chen J., Ohigashi N., Tsunawaki Y., Imasaki K., Mima K., Yamanaka C., Nakai S.

    Abstracts of the meeting of the Physical Society of Japan. Sectional meeting   1993 ( 4 )   262 - 262   1993.9

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  • 14a-N-4 Research of Free Electron Laser with Compact RF linac (IV)

    Asakawa M., Sakamoto N., Inoue N., Agari T., Asakuma T., Fujita M., Chen J., Yamamoto N., Ohigashi N., Tsunawaki Y., Imasaki K., Mima K., Yamanaka C., Nakai S.

    Abstracts of the meeting of the Physical Society of Japan. Sectional meeting   1993 ( 4 )   262 - 262   1993.9

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  • 14a-N-2 コンパクトRFライナックによる自由電子レーザーの研究 (II) : 加速器動特性のシミュレーション

    山本 達也, 古河 裕之, 今崎 一夫, 藤田 雅之, 陳基忠, 浅川 誠, 酒本 直樹, 井上 尚樹, 上利 達雄, 朝熊 孝, 永見 樹義, 大東 延久, 綱脇 恵章, 三間 圀興, 中井 貞夫, 山中 千代衛

    日本物理学会講演概要集. 秋の分科会   1993 ( 4 )   261 - 261   1993.9

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  • 14a-N-1 コンパクト RF加速器による自由電子レーザーの研究 (I) : 総括

    藤田 雅之, 陳 基忠, 今崎 一夫, 山中 千代衛, 浅川 誠, 酒本 直樹, 山本 達也, 井上 尚樹, 三間 圀興, 中井 貞雄, 大東 延久, 朝熊 孝, 上利 達雄, 綱脇 恵章, 永見 樹義

    日本物理学会講演概要集. 秋の分科会   1993 ( 4 )   261 - 261   1993.9

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  • EXPERIMENTAL STUDIES OF PHOTOCATHODE MATERIALS FOR FELS

    M ASAKAWA, N SAKAMOTO, Y SHIMIZU, S NAKAI, K IMASAKI, C YAMANAKA

    NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT   331 ( 1-3 )   302 - 306   1993.7

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  • 31p-ZD-14 Research of Free Electron Laser with Compact RF linac

    Asakawa M., Sakamoto N., Inoue N., Esaki S., Murayama Y., Fujita M., Chen C., Aki T., Yamamoto T., Ohigashi N., Tsunawaki Y., Imasaki K., Yamanaka C., Nakai S.

    Abstracts of the meeting of the Physical Society of Japan. Annual meeting   48 ( 4 )   202 - 202   1993.3

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  • 31p-ZD-11 コンパクトRFライナックによる自由電子レーザーの研究(I) : 総括(プラズマ物理・核融合(自由電子レーザー))

    藤田 雅之, 今崎 一夫, 陳 基忠, 浅川 誠, 安芸 寿彦, 酒本 直樹, 山本 達也, 井上 尚樹, 村山 義文, 江崎 伸也, 大東 延久, 綱脇 恵章, 中井 貞雄, 山中 千代衛

    日本物理学会講演概要集. 年会   48 ( 4 )   200 - 200   1993.3

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  • 31p-ZD-13 コンパクトRFライナックによる自由電子レーザーの研究(III)(プラズマ物理・核融合(自由電子レーザー))

    山本 達也, 古河 裕之, 今崎 一夫, 藤田 雅之, 陳 基忠, 浅川 誠, 安芸 寿彦, 酒本 直樹, 井上 尚樹, 村山 義文, 江崎 伸也, 大東 延久, 綱脇 恵章, 中井 貞雄, 山中 千代衛

    日本物理学会講演概要集. 年会   48 ( 4 )   201 - 201   1993.3

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  • 31p-ZD-15 Research of Free Electron Laser with Compact RF linac

    Sakamoto N., Asakawa M., Inoue N., Esaki S., Murayama Y., Fujita M., Chen C., Aki T., Yamamoto T., Ohigashi N., Tsunawaki Y., Imasaki K., Yamanaka C., Nakai S.

    Abstracts of the meeting of the Physical Society of Japan. Annual meeting   48 ( 4 )   202 - 202   1993.3

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  • FEL Oscillation by Coherent Radiation Emitted from an Electron Bunch.

    ASAKAWA Makoto, SAKAMOTO Naoki, INOUE Naoki, ESAKI Sinya, YAMAMOTO Tatsuya, CHEN Jizhong, FUJITA Masayuki, IMASAKI Kazuo, OHIGASHI Nobuhisa, TSUNAWAKI Yoshiaki, NAKAI Sadao, YAMANAKA Chiyoe

    rle   21 ( 7 )   746 - 753   1993

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    The free-electron-laser experiment in the milli-meter-range by the coherent radiation emitted from an electron bunch is reported. With a 7MeV rf-linac, the spontaneous emission of 20W has been observed. The oscillation experiment has been performed by superimposing this radiation in the resonator. Power of 16W was observed at wavelength of 2.73mm.

    DOI: 10.2184/lsj.21.7_746

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  • 27a-A-11 高輝度電子ビームによる自由電子レーザーの研究 IV

    今崎 一夫, 浅川 誠, 安芸 寿彦, 酒本 直樹, 陳 基忠, 山本 達也, 大東 延久, 綱脇 恵章

    秋の分科会講演予稿集   1992 ( 4 )   261 - 261   1992.9

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  • 27a-A-12 Research of Free Electron Laser with High-Brightness Electron Beam

    Asakawa M, Sakamoto N, Inoue N, Murayama Y, Chen C, Aki T, Yamamoto T, Ohigashi N, Tunawaki Y, Imasaki K, Yamanaka C, Nakai S

    1992 ( 4 )   184 - 184   1992.9

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  • 27a-A-13 高輝度電子ビームによる自由電子レーザーの研究(IV)

    安芸 寿彦, 浅川 誠, 酒本 直樹, 山本 達也, 大東 延久, 綱脇 恵章, 今崎 一夫, 山中 千代衛, 中井 貞雄

    秋の分科会講演予稿集   1992 ( 4 )   184 - 184   1992.9

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  • HIGHER HARMONIC-GENERATION IN A MODIFIED WIGGLER MAGNETIC-FIELD

    M ASAKAWA, K MIMA, S NAKAI, K IMASAKI, C YAMANAKA

    NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT   318 ( 1-3 )   538 - 545   1992.7

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    Analysis is performed for higher harmonic generation on a modified wiggler.

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  • 27p-D-9 DEVELOPMENT OF HIGH BRIGHTNESS ELCTRON BEAM FOR FREE ELECTRON LASER

    Asakawa M., Aki T., Imasaki K., Yamanaka C., Nakai S.

    1991 ( 4 )   190 - 190   1991.3

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Awards

  • レーザー学会 レーザー研究進歩賞

    1995  

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    Country:Japan

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Research Projects

  • 自由電子レーザーの研究

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    Grant type:Competitive

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  • Study on Free-Electron Lasers

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Devising educational methods

  • 「物理学を学ぶ(力学1)」及び「量子光工学」においては,(1)現象を想像すること,(2)想像したものを数式で表現する技術,そして(3)数式を計算する技術,を区別して扱うことを徹底した.「現象を想像すること」がどういうことなのか具体的に示すために,コンピュータシミュレーションによるアニメーションを提示した.授業評価アンケートの結果を鑑みると,これら一連の講義方法により学生の理解を深めることができたと考えることができる.  「物理数学C」は難解な複素関数論を扱うものであるが,種々の定理が理学的に工学的にどのように応用されるのかを示しながら講義を進めた.定理の証明に終始しなければ,多くの学生の興味をひくことができるようである.  実験系科目では,ガイドブックに掲載した実験のみならず,用意した実験装置を使って学生独自のアイデアに基づいた実験も行った.このような経験が楽しかったという学生が多数いた.

Teaching materials

  • 物理学・応用物理学基礎実験ガイドブック, 共著, 2008年3月, 浅川誠, 藤井和成, 山本健, 学術図書出版 物理・応用物理学科2年生を対象とした実験授業用のガイドブック.力学,光学から電子工学にわたる広範な分野の基礎的な現象について,その原理を解説するとともに,実験手順を示した.

Teaching method presentations

  •  特になし

Special notes on other educational activities

  • 「物理の教育」では,高校の物理教員と協力し複数担任の形で講義を行い,特に高校の教科書に掲載されている様々な物理学現象を実験し,それを通して学生に教材開発能力の素養を与えた.  小中高生対象のサイエンスセミナーにおいて光の物理学に関するテーマでセミナーを開講した.教材開発,テキスト作成をした.