An Exploration on Electron Bunching of Ionization Induced Self-injection in Laser Wakefield Accelerators

Released on by Deyun Li (M.A.)
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  • An Exploration on Electron Bunching of Ionization Induced Self-injection in Laser Wakefield Accelerators Book Detail

  • Author : Deyun Li (M.A.)
  • Release Date : 2016
  • Publisher :
  • Genre :
  • Pages : 84
  • ISBN 13 :
  • File Size : 42,42 MB
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An Exploration on Electron Bunching of Ionization Induced Self-injection in Laser Wakefield Accelerators by Deyun Li (M.A.) PDF Summary

Book Description: Plasma-based wakefield accelerator is attractive for generating quasi-monoenergetic electron beams using the bubble regime. The bubble is formed by an intense driver, which propagates through the plasma and expels all electrons transversely, creating a cavity free of cold plasma electrons that trailing behind the driver. Self-injection is applicable in the bubble regime, which can produce bunches of quasi-monoenergetic electrons. (1) Such electron bunching structure can be diagnosed with coherent transition radiation and may be exploited to generate powerful high frequency radiation [16].This thesis focuses on electron bunching phenomenon through WAKE simulations and theoretical analysis. The simulation is completed under laser-driven field ionization wakefield acceleration. The code is improved by taking into consideration the high frequency property of laser driver in wakefield acceleration. Finer grid size is introduced to the ionization injection part of WAKE, for increasing simulation accuracy without much sacrifice of programming efficiency. Various conditions for optimal bunching in the trapped electrons are explored computationally and analytically.

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