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Stimulated Raman scattering in the presence of stimulated Brillouin scattering

Journal Article · · Phys. Fluids; (United States)
DOI:https://doi.org/10.1063/1.866634· OSTI ID:7055907

Particle simulations of stimulated Raman scattering (SRS) are presented in which stimulated Brillouin scattering (SBS) also occurs. Frequency spectra of forward and backscattered light are compared for various ratios of ion mass to electron mass. SBS is seen to weaken the SRS backscattering in all cases in which the plasma density profile includes the quarter-critical density. For cases in which the plasma density remains below quarter-critical, the SRS backscattering is not strongly affected by the SBS. In long-scale length, quarter-critical density cases for which m/sub i//m/sub e/ = 400, large amplitude density perturbations grow and persist.

Research Organization:
Department of Physics, The University of British Columbia, Vancouver, British Columbia V6T 2A6, Canada
OSTI ID:
7055907
Journal Information:
Phys. Fluids; (United States), Journal Name: Phys. Fluids; (United States) Vol. 31:8; ISSN PFLDA
Country of Publication:
United States
Language:
English