TY - JOUR
T1 - Some possible parametric instabilities in unmagnetized plasma: Kinetic theory
AU - Mamun, A A
AU - Cairns, R A
PY - 1996
Y1 - 1996
N2 - 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.
AB - 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.
U2 - 10.1088/0031-8949/1996/T63/034
DO - 10.1088/0031-8949/1996/T63/034
M3 - Article
SN - 0281-1847
VL - T63
SP - 211
EP - 215
JO - Physica Scripta. Topical Issues
JF - Physica Scripta. Topical Issues
ER -