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Title: Three-dimensional particle-in-cell modeling of parametric instabilities near the quarter-critical density in plasmas

Journal Article · · Physical Review E
ORCiD logo [1];  [1];  [2];  [3];  [4];  [5]
  1. Univ. of Rochester, NY (United States). Lab. for Laser Energetics and Dept. of Mechanical Engineering
  2. Univ. of Rochester, NY (United States). Lab. for Laser Energetics and Dept. of Mechanical Engineering; Univ. of Science and Technology of China, Anhui (China)
  3. Univ. of Rochester, NY (United States). Lab. for Laser Energetics and Dept. of Mechanical Engineering; Univ. of California, San Diego, CA (United States)
  4. Univ. of Rochester, NY (United States). Lab. for Laser Energetics, Dept. of Mechanical Engineering and Dept. of Physics and Astronomy
  5. Univ. of California, Los Angeles, CA (United States). Dept. of Physics and Astronomy
+ Show Author Affiliations

The nonlinear regime of laser-plasma interactions including both two-plasmon decay (TPD) and stimulated Raman scattering (SRS) instabilities has been studied in three-dimensional (3D) particle-in-cell simulations with parameters relevant to the inertial confinement fusion (ICF) experiments. SRS and TPD develop in the same region in plasmas, and the generation of fast electrons can be described accurately with only the full model including both SRS and TPD. The growth of instabilities in the linear stage is found to be in good agreement with analytical theories. In the saturation stage the low-frequency density perturbations driven by the daughter waves of the SRS side scattering can saturate the TPD and consequently inhibit the fast-electron generation. As a result, the fast-electron flux in 3D modeling is up to an order of magnitude smaller than previously reported in 2D TPD simulations, bringing it close to the results of ICF experiments.

Research Organization:
Univ. of Rochester, NY (United States). Lab. for Laser Energetics
Sponsoring Organization:
USDOE National Nuclear Security Administration (NNSA)
Contributing Organization:
Laboratory for Laser Energetics, University of Rochester
Grant/Contract Number:
NA0003856
OSTI ID:
1571562
Journal Information:
Physical Review E, Vol. 100, Issue 4; ISSN 2470-0045
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 7 works
Citation information provided by
Web of Science

References (20)

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