Overloading effect of energetic electrons in the bubble regime of laser wakefield acceleration

Journal Article · Fri Oct 15 00:00:00 EDT 2010 · Physics of Plasmas

DOI:https://doi.org/10.1063/1.3494237· OSTI ID:21421286

Jiancai, Xu; Baifei, Shen; Xiaomei, Zhang; Meng, Wen; Liangliang, Ji; Wenpeng, Wang; Yahong, Yu ^[1]; Yuelin, Li ^[2]

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1. State Key Laboratory of High Field Laser Physics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, P.O. Box 800-211, Shanghai 201800 (China)
2. Argonne Accelerator Institute and Chemistry Division, Argonne National Laboratory, Argonne, Illinois 60439 (United States)

The overloading effect of self-injected high-charge electron bunch in the bubble regime of laser wakefield acceleration is studied. When too many electrons are trapped by the bubble, the wakefield can be strongly modified, preventing further injection of the background electrons. This process is directly observed in two-dimensional particle-in-cell simulation and is explained using a one-dimensional wake model. For obtaining significantly more energetic electrons, the use of a decreasing plasma density profile is proposed.

• OSTI ID: 21421286
• Journal Information: Physics of Plasmas, Vol. 17, Issue 10; Other Information: DOI: 10.1063/1.3494237; (c) 2010 American Institute of Physics; ISSN 1070-664X
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
PLASMA DENSITY
PLASMA SIMULATION
TAIL ELECTRONS
TWO-DIMENSIONAL CALCULATIONS
WAKEFIELD ACCELERATORS
ACCELERATORS
ELECTRONS
ELEMENTARY PARTICLES
FERMIONS
LEPTONS
LINEAR ACCELERATORS
SIMULATION