Raman scattering in a nearly resonant density ripple
作者:
Hugh C. Barr,
Francis F. Chen,
期刊:
Physics of Fluids(00319171)
(AIP Available online 1987)
卷期:
Volume 30,
issue 4
页码: 1180-1188
ISSN:0031-9171
年代: 1987
DOI:10.1063/1.866318
出版商: AIP
数据来源: AIP
摘要:
Stimulated Raman scattering of light waves by an underdense plasma is affected by the presence of a density ripple caused by a simultaneously occurring stimulated Brillouin instability. The problem is treated kinetically for the particularly interesting case where the ripple has nearly the same wavelength as the plasma wave. The ripple is found to reduce the growth rate of the usual Raman instability but allows other decay modes to occur. Numerical results for the frequencies, growth rates, andkspectra of these modes are obtained. A physical explanation is given for a baffling result of the calculation. The physical picture is also of interest to particle acceleration by plasma waves.
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