Ionization-induced electron trapping in ultrarelativistic plasma wakes

被引：141
|
作者：
Oz, E. [1 ]
Deng, S.
Katsouleas, T.
Muggli, P.
Barnes, C. D.
Blumenfeld, I.
Decker, F. J.
Emma, P.
Hogan, M. J.
Ischebeck, R.
Iverson, R. H.
Kirby, N.
Krejcik, P.
O'Connell, C.
Siemann, R. H.
Walz, D.
Auerbach, D.
Clayton, C. E.
Huang, C.
Johnson, D. K.
Joshi, C.
Lu, W.
Marsh, K. A.
Mori, W. B.
Zhou, M.
机构：
[1] Univ So Calif, Dept Electrophys & Elect Engn, Los Angeles, CA 90089 USA
[2] Stanford Linear Accelerator Ctr, Menlo Pk, CA 94025 USA
[3] Univ Calif Los Angeles, Dept Elect Engn, Los Angeles, CA 90095 USA
来源：
PHYSICAL REVIEW LETTERS | 2007年 / 98卷 / 08期
关键词：
D O I：
10.1103/PhysRevLett.98.084801
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
The onset of trapping of electrons born inside a highly relativistic, 3D beam-driven plasma wake is investigated. Trapping occurs in the transition regions of a Li plasma confined by He gas. Li plasma electrons support the wake, and higher ionization potential He atoms are ionized as the beam is focused by Li ions and can be trapped. As the wake amplitude is increased, the onset of trapping is observed. Some electrons gain up to 7.6 GeV in a 30.5 cm plasma. The experimentally inferred trapping threshold is at a wake amplitude of 36 GV/m, in good agreement with an analytical model and PIC simulations.
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页数：4
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