Modulational instability in a plasma with suprathermal electrons
作者:
H. P. Freund,
Robert A. Smith,
K. Papadopoulos,
P. Palmadesso,
期刊:
Physics of Fluids(00319171)
(AIP Available online 1981)
卷期:
Volume 24,
issue 3
页码: 442-446
ISSN:0031-9171
年代: 1981
DOI:10.1063/1.863390
出版商: AIP
数据来源: AIP
摘要:
The consequences of the presence of suprathermal electrons on the linear stage of modulational instabilities are investigated for a range of parameters appropriate to both laboratory and astrophysical plasmas. Substantial modifications to the growth rate and secondary spectrum are found to occur for instabilities driven by large amplitude Langmuir waves in the dipole limit due to the kinetic effects of the suprathermal electrons. In particular, for reasonable choices of pump amplitude and suprathermal energy density, additional modes become unstable.
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