EPJ Web of Conferences (Nov 2013)

The dependence of spatial autoresonance in SRS on kLλD

  • Chapman T.,
  • Hüller S.,
  • Masson-Laborde P.E.,
  • Heron A.,
  • Rozmus W.,
  • Pesme D.

DOI
https://doi.org/10.1051/epjconf/20135905012
Journal volume & issue
Vol. 59
p. 05012

Abstract

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Spatial autoresonance is investigated as a mechanism for the enhancement of stimulated Raman scattering (SRS) in the kinetic regime (kLλD > 0.29). Autoresonance in 3-wave simulations was demonstrated in a previous study [Chapman et al., Phys. Plasmas 17, 122317 (2010)]. These results are applied to particle-in-cell (PIC) simulations. Good agreement is found between PIC simulations and a 3-wave model using a nonlinear frequency shift beyond the regime usually referred to as “weakly kinetic”. Autoresonance is studied for a range of values of kLλD.