NUMERICAL SOLUTIONS FOR THE EIGEN MODES OF THE ABSOLUTE DECAY PARAMETRIC INSTABILITY OF INHOMOGENEOUS PLASMA AT THE NONLINEAR STAGE
Abstract
A mathematical model for the nonlinear absolute decay parametric instability of inhomogeneous plasma is developed. Decay of the Langmuir pump wave on the Langmuir and ion-acoustic waves is considered in detail. The numerical solutions describing the eigen modes of the instability are obtained. It is shown that at the nonlinear stage of the instability, a depletion of a pump wave and a broadening of an ion-acoustic wave spectrum are observed. The simulation results are in agreement with the experimental ones.
About the Authors
V. I. ARKHIPENKO
B. I. Stepanov Institute of Physics of the National Academy of Sciences of Belarus, Minsk
Belarus
Belarus
E. Z. GUSAKOV
Physical-Technical Institute of Russian Academy of Sciences, St-Petersburg
Russian Federation
Russian Federation
L. V. SIMONCHIK
B. I. Stepanov Institute of Physics of the National Academy of Sciences of Belarus, Minsk
Belarus
Belarus
A. V. TOMOV
Mogilev State University, Mogilev
Russian Federation
Russian Federation
F. M. TRUHACHEV
Belarusian-Russian University, Mogilev
Russian Federation
Russian Federation
I. A. CHERKASOVA
Belarusian-Russian University, Mogilev
Russian Federation
Russian Federation
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