Trapped-Particle Instability Leading to Bursting in Stimulated Raman Scattering Simulations

Technical Report · Thu Nov 08 00:00:00 EST 2001

DOI:https://doi.org/10.2172/792582· OSTI ID:792582

Brunner, S; Valeo, E

Nonlinear, kinetic simulations of Stimulated Raman Scattering (SRS) for laser-fusion-relevant conditions present a bursting behavior. Different explanations for this regime has been given in previous studies: Saturation of SRS by increased nonlinear Landau damping [K. Estabrook et al., Phys. Fluids B 1 (1989) 1282] and detuning due to the nonlinear frequency shift of the plasma wave [H.X. Vu et al., Phys. Rev. Lett. 86 (2001) 4306]. Another mechanism, also assigning a key role to the trapped electrons, is proposed here: The break-up of the plasma wave through the trapped-particle instability.

• Research Organization: Princeton Plasma Physics Lab. (PPPL), Princeton, NJ (United States)
• Sponsoring Organization: USDOE Office of Science (US)
• DOE Contract Number: AC02-76CH03073
• OSTI ID: 792582
• Report Number(s): PPPL-3624; TRN: US0200781
• Resource Relation: Other Information: PBD: 8 Nov 2001
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
RAMAN EFFECT
LANDAU DAMPING
PLASMA WAVES
SCATTERING
TRAPPED ELECTRONS
TRAPPED-PARTICLE INSTABILITY
LASER FUSION REACTORS