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Title: Demonstrating the saturation of stimulated Brillouin scattering by ion acoustic decay using fully kinetic simulations

The saturation of stimulated Brillouin scattering (SBS) by the decay to turbulence of the ion acoustic wave (IAW) that participates in the three-wave SBS interaction is demonstrated using a quasi-noiseless one-dimensional numerical solution to the Vlasov-Maxwell system of equations. This simulation technique permits careful examination of the decay process and its role in the complex evolution of SBS. Here, the IAW decay process is shown to be an effective SBS saturation mechanism. In our example, the instantaneous plasma reflectivity saturates at ~30% and drops to ~0% as a direct consequence of IAW decay. A contrasting example where the reflectivity is controlled by dephasing due to the nonlinear frequency of the IAW is also discussed.
 [1] ; ORCiD logo [2] ;  [3] ;  [1] ;  [4]
  1. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
  2. Univ. of California, Los Angeles, CA (United States). Dept. of Electrical Engineering
  3. Ecole Polytechnique Federale Lausanne (Switzlerland). Centre de Recherche en Physique des Plasma (CRPP)
  4. Rensselaer Polytechnic Inst., Troy, NY (United States). Dept. of Mathematical Sciences
Publication Date:
Report Number(s):
Journal ID: ISSN 1070-664X
Grant/Contract Number:
AC52-07NA27344; NA0001833; FC02-04ER54789
Accepted Manuscript
Journal Name:
Physics of Plasmas
Additional Journal Information:
Journal Volume: 22; Journal Issue: 9; Journal ID: ISSN 1070-664X
American Institute of Physics (AIP)
Research Org:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Sponsoring Org:
Country of Publication:
United States
70 PLASMA PHYSICS AND FUSION; Electrostatic waves; Stimulated Brillouin scattering; Reflectivity; Maxwell equations; Light scattering
OSTI Identifier:
Alternate Identifier(s):
OSTI ID: 1229670