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Bremsstrahlung hard x-ray source driven by an electron beam from a self-modulated laser wakefield accelerator

Journal Article · · Plasma Physics and Controlled Fusion
 [1];  [1];  [2];  [3];  [3];  [4];  [2];  [5];  [1];  [1];  [6];  [1];  [1];  [1];  [1];  [1];  [5]
  1. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
  2. Univ. of Rochester, NY (United States). Lab. for Laser Energetics
  3. ELI-ALPS, Szeged (Hungary)
  4. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States); Univ. of Texas, Austin, TX (United States)
  5. Univ. of California, Los Angeles, CA (United States)
  6. Univ. of Texas, Austin, TX (United States)

An x-ray source generated by an electron beam produced using a Self-Modulated Laser Wakefield Accelerator (SM-LWFA) is explored for use in high energy density science facilities. By colliding the electron beam, with a maximum energy of 380 MeV, total charge of >10 nC and a divergence of 64 x 100 mrad, from a SM-LWFA driven by a 1ps 120 J laser, into a high-Z foil, an x/gamma-ray source was generated. A broadband bremsstrahlung energy spectrum with temperatures ranging from 0.8 to 2 MeV was measured with an almost 2 orders of magnitude flux increase when compared with other schemes using LWFA. GEANT4 simulations were done to calculate the source size and divergence.

Research Organization:
Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
Sponsoring Organization:
USDOE National Nuclear Security Administration (NNSA)
Grant/Contract Number:
AC52-07NA27344
OSTI ID:
1542711
Alternate ID(s):
OSTI ID: 23001534
Report Number(s):
LLNL-JRNL--742935; 897945
Journal Information:
Plasma Physics and Controlled Fusion, Journal Name: Plasma Physics and Controlled Fusion Journal Issue: 5 Vol. 60; ISSN 0741-3335
Publisher:
IOP ScienceCopyright Statement
Country of Publication:
United States
Language:
English

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Cited By (5)

X-ray analysis methods for sources from self-modulated laser wakefield acceleration driven by picosecond lasers journal March 2019
X-ray sources using a picosecond laser driven plasma accelerator journal August 2019
Effects of laser polarization and wavelength on hybrid laser wakefield and direct acceleration journal August 2018
All-optical generation of petawatt gamma radiation via inverse Compton scattering from laser interaction with tube target journal June 2019
Plasma-based accelerators: then and now journal August 2019

Figures / Tables (6)


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