Some possible parametric instabilities in unmagnetized plasma: Kinetic theory

A A Mamun, R A Cairns

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)

Abstract

Some possible parametric instabilities, viz, modulation, filamentation, and stimulated Raman scattering instabilities in uniform and unmagnetized plasma have been investigated by using kinetic theory. The fully relativistic Vlasov equation has been employed to find the nonlinear response of electrons for these parametric processes. The analytical and numerical calculations of the growth rates of these instabilities are made and the nonlinear variation of the growth rates of each of these instabilities with the power of the incident laser beam are observed. For low powers, the growth rate is proportional to the pump wave amplitude, but at high powers the relativistic mass increase of the electrons produces a decrease in growth rate with amplitude. The dependence of these growth rates on some plasma parameters, such as plasma density, is also investigated.

Original languageEnglish
Pages (from-to)211-215
Number of pages5
JournalPhysica Scripta. Topical Issues
VolumeT63
DOIs
Publication statusPublished - 1996

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