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Measurements of high-energy radiation generation from laser-wakefield accelerated electron beams

Research output: Contribution to journalJournal article

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  • W. Schumaker
  • G. Sarri
  • M. Vargas
  • Z. Zhao
  • K. Behm
  • V. Chvykov
  • B. Dromey
  • B. Hou
  • A. Maksimchuk
  • J. Nees
  • V. Yanovsky
  • M. Zepf
  • A. G. R. Thomas
  • K. Krushelnick
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Article number056704
<mark>Journal publication date</mark>05/2014
<mark>Journal</mark>Physics of Plasmas
Issue number5
Volume21
Number of pages7
StatePublished
Early online date21/05/14
Original languageEnglish

Abstract

Using high-energy (similar to 0.5 GeV) electron beams generated by laser wakefield acceleration (LWFA), bremsstrahlung radiation was created by interacting these beams with various solid targets. Secondary processes generate high-energy electrons, positrons, and neutrons, which can be measured shot-to-shot using magnetic spectrometers, short half-life activation, and Compton scattering. Presented here are proof-of-principle results from a high-resolution, high-energy gamma-ray spectrometer capable of single-shot operation, and high repetition rate activation diagnostics. We describe the techniques used in these measurements and their potential applications in diagnosing LWFA electron beams and measuring high-energy radiation from laser-plasma interactions. (C) 2014 AIP Publishing LLC.