Raman Forward Scattering in Plasma Channels.

Shvets, G. ; Li, X.

Technical Information Center Oak Ridge Tennessee

关键词: Raman effects;    Backscattering;    Plasma;    Channels;    Plasma waves;   

RP-ID  :  DE2001768664

学科分类：工程和技术（综合）

美国|英语

来源: National Technical Reports Library

【 摘 要 】

Raman scattering instability of an intense laser pulse in a plasma channel proceeds differently than in a homogeneous plasma: the growth rate is reduced and the scaling with the laser intensity modified. These differences, significant even for shallow plasma channels, arise because of the radial shear of the plasma frequency and the existence of the weakly damped hybrid (electrostatic/electromagnetic) modes of the radially inhomogeneous plasma. The interplay of these two effects produces double-peaked spectra for the forward scattering in a channel.