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

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.
Authors:
; ; ; ;  [1] ;  [1] ;  [2] ;  [3]
  1. Applied Ion Beam Physics Laboratory, Key Laboratory of the Ministry of Education, Institute of Modern Physics, Fudan University, Shanghai 200433 (China)
  2. (Czech Republic)
  3. Department of Advanced Interdisciplinary Sciences, Utsunomiya University, 7-1-2 Yohtoh, Utsunomiya 321-8585 (Japan)
Publication Date:
OSTI Identifier:
22299849
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physics of Plasmas; Journal Volume: 21; Journal Issue: 7; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; BUBBLES; CROSS SECTIONS; ELECTRON BEAM INJECTION; ELECTRONS; GEOMETRY; LASERS; PLASMA; SHAPE; SIMULATION; SPHERICAL CONFIGURATION; TRAPPING