Laser Plasma instability reduction by coherence disruption

Kruer, W l ; Amendt, P A ; Meezan, N ; Suter, L J

Lawrence Livermore National Laboratory

关键词: Saturation;    Trapping;    Electrons;    Reflectivity;    42 Engineering;   

DOI  :  10.2172/928547
RP-ID  :  UCRL-SR-220853
RP-ID  :  W-7405-ENG-48
RP-ID  :  928547

美国|英语

来源: UNT Digital Library

【 摘 要 】

The saturation levels of stimulated scattering of intense laser light in plasmas and techniques to reduce these levels are of great interest. A simple model is used to highlight the dependence of the reflectivity on the coherence length for the density fluctuations producing the scattering. Sometimes the coherence lengths can be determined nonlinearly. For NIF hohlraum plasmas, a reduction in the coherence lengths might be engineered in several ways. Finally, electron trapping in ion sound waves is briefly examined as a potentially important effect for the saturation of stimulated Brillouin scattering.