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Title: Diagnosis of bubble evolution in laser-wakefield acceleration via angular distributions of betatron x-rays

We present an indirect method to diagnose the electron beam behaviors and bubble dynamic evolution in a laser-wakefield accelerator. Four kinds of typical bubble dynamic evolution and, hence, electron beam behaviors observed in Particle-In-Cell simulations are identified correspondingly by simultaneous measurement of distinct angular distributions of the betatron radiation and electron beam energy spectra in experiment. The reconstruction of the bubble evolution may shed light on finding an effective way to better generate high-quality electron beams and enhanced betatron X-rays.
Authors:
; ; ;  [1] ; ;  [2] ;  [3] ;  [4] ;  [2] ;  [5]
  1. Beijing National Laboratory of Condensed Matter Physics, Institute of Physics, CAS, Beijing 100080 (China)
  2. Key Laboratory for Laser Plasmas and Department of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai 200240 (China)
  3. Institute of High Energy Physics, CAS, Beijing 100049 (China)
  4. Lawrence Livermore National Laboratory, Livermore, California 94550 (United States)
  5. (United Kingdom)
Publication Date:
OSTI Identifier:
22350942
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 105; Journal Issue: 16; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; ACCELERATION; ANGULAR DISTRIBUTION; BETATRONS; ELECTRON BEAMS; ENERGY SPECTRA; LASER RADIATION; SIMULATION; VISIBLE RADIATION; WAKEFIELD ACCELERATORS; X RADIATION