Raman Forward Scattering in Plasma Channels

Shvets, G. ; Li, X.

Princeton University. Plasma Physics Laboratory.

关键词: Spectra;    70 Plasma Physics And Fusion Technology;    Scattering;    Homogeneous Plasma;    Langmuir Frequency;   

DOI  :  10.2172/768664
RP-ID  :  PPPL-3520
RP-ID  :  AC02-76CH03073
RP-ID  :  768664

美国|英语

来源: UNT Digital 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 direct forward scattering in a channel.