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Transport of kJ-laser-driven relativistic electron beams in cold and shock-heated vitreous carbon and diamond

Journal Article · · New Journal of Physics
 [1];  [2];  [3];  [2];  [2];  [4];  [4];  [5];  [6];  [6];  [7];  [8];  [2]
  1. Univ. of California, San Diego, CA (United States); The Regents of the University of California, U.C. San Diego
  2. Univ. of California, San Diego, CA (United States)
  3. General Atomics, San Diego, CA (United States)
  4. Univ. of Rochester, NY (United States). Lab. for Laser Energetics
  5. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
  6. Univ. Bordeaux (France)
  7. Univ. of Strathclyde, Glasgow, Scotland (United Kingdom)
  8. Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)

We report experimental results on relativistic electron beam (REB) transport in a set of cold and shock-heated carbon samples using the high-intensity kilojoule-class OMEGA EP laser. The REB energy distribution and transport were diagnosed using an electron spectrometer and x-ray fluorescence measurements from aCu tracer buried at the rear side of the samples. The measured rear REB density shows brighter and narrower signals when the targets were shock-heated. Hybrid PIC simulations using advanced resistivity models in the target warm-dense-matter (WDM) conditions confirm this observation. We show that the resistivity response of the media, which governs the self generated resistive fields, is of paramount importance to understand and correctly predict the REB transport.

Research Organization:
Univ. of California, San Diego, CA (United States)
Sponsoring Organization:
USDOE National Nuclear Security Administration (NNSA)
Grant/Contract Number:
NA0003842; NA0002728
OSTI ID:
1633883
Alternate ID(s):
OSTI ID: 1867103
OSTI ID: 1772950
OSTI ID: 23007464
Journal Information:
New Journal of Physics, Journal Name: New Journal of Physics Journal Issue: 3 Vol. 22; ISSN 1367-2630
Publisher:
IOP PublishingCopyright Statement
Country of Publication:
United States
Language:
English

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