Dependence of electron trapping on bubble geometry in laser-plasma wakefield acceleration

Journal Article · Tue Jul 15 00:00:00 EDT 2014 · Physics of Plasmas

DOI:https://doi.org/10.1063/1.4891665· OSTI ID:22299849

Li, X. F.; Yu, Q.; Huang, S.; Zhang, F.; Gu, Y. J. ^[1]; Kawata, S. ^[2]

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1. Applied Ion Beam Physics Laboratory, Key Laboratory of the Ministry of Education, Institute of Modern Physics, Fudan University, Shanghai 200433 (China)
2. Department of Advanced Interdisciplinary Sciences, Utsunomiya University, 7-1-2 Yohtoh, Utsunomiya 321-8585 (Japan)

The effect of bubble shape in laser-plasma electron acceleration was investigated. We showed the general existence of an ellipsoid bubble. The electromagnetic field in this bubble and its dependence on bubble shape were determined through theory. The electron-trapping cross-section for different bubble aspect ratios was studied in detail. When the shape of the bubble was close to spherical, the trapping cross-section reached to the maximum. When the bubble deviated from a spherical shape, the cross-section decreased until electron injection no longer occurred. These results were confirmed by particle-in-cell simulation.

• OSTI ID: 22299849
• Journal Information: Physics of Plasmas, Vol. 21, Issue 7; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 1070-664X
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
BUBBLES
CROSS SECTIONS
ELECTRON BEAM INJECTION
ELECTRONS
GEOMETRY
LASERS
PLASMA
SHAPE
SIMULATION
SPHERICAL CONFIGURATION
TRAPPING