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

Using high-energy (∼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.
Authors:
; ; ; ; ; ; ; ; ; ;  [1] ; ; ;  [2]
  1. Center for Ultrafast Optical Science, University of Michigan, Ann Arbor, Michigan 48109 (United States)
  2. School of Mathematics and Physics, The Queen's University of Belfast, BT7 1NN Belfast, Northern Ireland (United Kingdom)
Publication Date:
OSTI Identifier:
22300228
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physics of Plasmas; Journal Volume: 21; Journal Issue: 5; Other Information: (c) 2014 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; ACCELERATION; BREMSSTRAHLUNG; COMPTON EFFECT; DIAGNOSIS; ELECTRON BEAMS; ELECTRONS; GAMMA SPECTROMETERS; GEV RANGE 01-10; HALF-LIFE; LASERS; MAGNETIC SPECTROMETERS; NEUTRONS; PLASMA; POSITRONS; POTENTIALS; RESOLUTION