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Title: Observation of laser multiple filamentation process and multiple electron beams acceleration in a laser wakefield accelerator

The multiple filaments formation process in the laser wakefield accelerator (LWFA) was observed by imaging the transmitted laser beam after propagating in the plasma of different density. During propagation, the laser first self-focused into a single filament. After that, it began to defocus with energy spreading in the transverse direction. Two filaments then formed from it and began to propagate independently, moving away from each other. We have also demonstrated that the laser multiple filamentation would lead to the multiple electron beams acceleration in the LWFA via ionization-induced injection scheme. Besides, its influences on the accelerated electron beams were also analyzed both in the single-stage LWFA and cascaded LWFA.
Authors:
; ; ; ; ; ; ; ; ; ; ;  [1]
  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)
Publication Date:
OSTI Identifier:
22218443
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physics of Plasmas; Journal Volume: 20; Journal Issue: 11; Other Information: (c) 2013 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; 43 PARTICLE ACCELERATORS; ACCELERATION; BEAM PRODUCTION; BEAM-PLASMA SYSTEMS; ELECTRON BEAMS; ELECTRONS; IONIZATION; LASERS; LIGHT TRANSMISSION; PLASMA DENSITY; PLASMA DIAGNOSTICS; PLASMA FILAMENT; PLASMA GUNS; PLASMA PRODUCTION; WAKEFIELD ACCELERATORS