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Title: Evolution of the Electron Distribution Function in the Presence of Inverse Bremsstrahlung Heating and Collisional Ionization

Journal Article · · Physical Review Letters
 [1]; ORCiD logo [2];  [2];  [1];  [3];  [3];  [3];  [3];  [1];  [3];  [4];  [1]
  1. Univ. of Rochester, NY (United States). Lab. for Laser Energetics; Univ. of Rochester, NY (United States). Dept. of Physics and Astronomy
  2. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
  3. Univ. of Rochester, NY (United States). Lab. for Laser Energetics
  4. Univ. of Alberta, Edmonton, AB (Canada)

The picosecond evolution of non-Maxwellian electron distribution functions was measured here in a laser-produced plasma using collective electron plasma wave Thomson scattering. During the laser heating, the distribution was measured to be approximately super-Gaussian due to inverse bremsstrahlung heating. After the heating laser turned off, collisional ionization caused further modification to the distribution function while increasing electron density and decreasing temperature. Electron distribution functions were observed using Vlasov-Fokker-Planck simulations including atomic kinetics.

Research Organization:
Univ. of Rochester, NY (United States). Lab. for Laser Energetics; Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
Sponsoring Organization:
USDOE National Nuclear Security Administration (NNSA)
Grant/Contract Number:
NA0003856; AC52-07NA27344
OSTI ID:
1599351
Alternate ID(s):
OSTI ID: 1669231
Report Number(s):
2019-70, 1545; LLNL-JRNL-788470; PRLTAO; 2019-70, 1545, 2502; TRN: US2103465
Journal Information:
Physical Review Letters, Vol. 124, Issue 2; ISSN 0031-9007
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 18 works
Citation information provided by
Web of Science

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