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Manipulation and electron-oscillation-measurement of laser accelerated electron beams

レーザー加速電子ビームの加工及び電子振動の計測

小瀧 秀行; 林 由紀雄; 川瀬 啓悟; 森 道昭; 神門 正城; 本間 隆之; Koga, J. K.; 大道 博行; Bulanov, S. V.

Kotaki, Hideyuki; Hayashi, Yukio; Kawase, Keigo; Mori, Michiaki; Kando, Masaki; Homma, Takayuki; Koga, J. K.; Daido, Hiroyuki; Bulanov, S. V.

In order to use a laser accelerated electron beam to applications, it is necessary to generate a stable electron beam and to control the electron beam. A 40 fs laser pulse with the energy of 200 mJ is focused onto a supersonic gas jet. We succeed to generate a stable electron beam by using Nitrogen gas as a target. The profile of the electron beam can be controlled by changing the laser polarization. When we use a S polarized laser pulse, a 20 MeV electron beam is observed with a oscillation in the image of the energy spectrum. The direction of the electron beam can be controlled by changing the gas jet position. The self-injected electron beam can be controlled by the control of the laser and the gas jet.

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パーセンタイル:73.97

分野:Physics, Fluids & Plasmas

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