Smith–Purcell Radiation with Three-Dimensional Simulation

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著者

    • Li Dazhi Li Dazhi
    • Institute for Laser Technology, 2-6 Yamada-oka, Suita, Osaka 565-0871, Japan
    • Park Gun-Sik
    • School of Physics, Seoul National University, Seoul 151-747, Korea
    • Miyamoto Shuji
    • LASTI, University of Hyogo, 3-1-2 Koto, Kamigori, Ako, Hyogo 678-1205, Japan
    • Amano Sho
    • LASTI, University of Hyogo, 3-1-2 Koto, Kamigori, Ako, Hyogo 678-1205, Japan

抄録

An investigation of Smith–Purcell radiation is carried out with a three-dimensional particle-in-cell simulation. The simulation model consists of a rectangular grating with limited length and width, which is driven by a single electron bunch, a train of periodic bunches, and a continuous beam. Smith–Purcell radiation is observed and distinguished from an evanescent wave, which travels near the surface of the grating. We found that the evanescent wave has a frequency lower than the allowed minimum Smith–Purcell frequency, and does not radiate until it reaches the ends of the grating. It is also shown that superradiant radiation can be excited by periodic electron bunches. With the present parameters, superradiant radiations are emitted at higher harmonics of the bunch frequency and at corresponding Smith–Purcell angles. The initially continuous beam can be bunched by the interaction with the evanescent wave when the beam current is above a certain threshold, and consequently induces the superradiant Smith–Purcell radiation. The threshold current is derived as well.

収録刊行物

  • Japanese journal of applied physics. Pt. 1, Regular papers & short notes  

    Japanese journal of applied physics. Pt. 1, Regular papers & short notes 46(2), 601-604, 2007-02-15 

    Published by the Japan Society of Applied Physics through the Institute of Pure and Applied Physics

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各種コード

  • NII論文ID(NAID)
    10018545065
  • NII書誌ID(NCID)
    AA10457675
  • 本文言語コード
    EN
  • 資料種別
    ART
  • 雑誌種別
    大学紀要
  • ISSN
    0021-4922
  • NDL 記事登録ID
    8651334
  • NDL 雑誌分類
    ZM35(科学技術--物理学)
  • NDL 請求記号
    Z53-A375
  • データ提供元
    CJP書誌  NDL  JSAP 
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