Electron energy boosting in laser-wake-field acceleration with external magnetic field B∼1 T and laser prepulses

被引：32

作者：

Hosokai, Tomonao ^{[1
,2
]}

Zhidkov, Alexei ^{[3
]}

Yamazaki, Atsushi ^{[4
]}

Mizuta, Yoshio ^{[5
]}

Uesaka, Mitsuru ^{[6
]}

Kodama, Ryosuke ^{[1
,2
,5
]}

机构：

[1] Osaka Univ, Photon Pioneers Ctr, Suita, Osaka 5650871, Japan

[2] Japan Sci & Technol Agcy, CREST, Suita, Osaka 5650871, Japan

[3] Cent Res Inst Elect Power Ind, Kanagawa 2400196, Japan

[4] Nagoya Univ, Grad Sch Engn, Chikusa Ku, Nagoya, Aichi 4648603, Japan

[5] Osaka Univ, Grad Sch Engn, Suita, Osaka 5650871, Japan

[6] Univ Tokyo, Grad Sch Engn, Naka, Ibaraki 3191188, Japan

来源：

APPLIED PHYSICS LETTERS | 2010年 / 96卷 / 12期

关键词：

electron accelerators; electron beams; electron sources; laser beam applications; wakefield accelerators; GAS-FILLED CAPILLARY; PLASMA CHANNELS; BEAMS; PULSES; GENERATION; DISCHARGE; JET;

D O I：

10.1063/1.3371709

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Hundred-mega-electron-volt electron beams with quasi-monoenergetic distribution, and a transverse geometrical emittance as small as similar to 0.02 pi mm mrad are generated by low power (7 TW, 45 fs) laser pulses tightly focused in helium gas jets in an external static magnetic field, B similar to 1 T. Generation of monoenergetic beams strongly correlates with appearance of a straight, at least 2 mm length plasma channel in a short time before the main laser pulse and with the energy of copropagating picosecond pedestal pulses (PPP). For a moderate energy PPP, the multiple or staged electron self-injection in the channel gives several narrow peaks in the electron energy distribution.

引用

页数：3

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