Temperature dependence of pump coupling in two-plasmon decay instability of an electromagnetic wave in homogeneous fluid plasmas

We have re-examined the pump-coupling term of the growth rate, in the fluid-Maxwell theory for the weak-damping limit of the two-plasmon decay instability of an electromagnetic wave (pump) in a homogeneous plasma. We found that the maximum pump coupling is obtained as (k0v0/4)(2TL/T−1) for electron...

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Bibliographic Details
Published in:Physics of plasmas 2015-08, Vol.22 (8)
Main Authors: Cho, Guan Sik, Lee, Jewon, Jeon, Minhyon, Tsui, Ying Y.
Format: Article
Language:English
Subjects:
Angular speed
Cold plasmas
Coupling
Damping
Decay
Electromagnetic radiation
Electron density
Electron plasma
Hyperbolas
Particle mass
Plasma physics
Plasma waves
Stability
Temperature
Temperature dependence
Wavelengths
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Summary:We have re-examined the pump-coupling term of the growth rate, in the fluid-Maxwell theory for the weak-damping limit of the two-plasmon decay instability of an electromagnetic wave (pump) in a homogeneous plasma. We found that the maximum pump coupling is obtained as (k0v0/4)(2TL/T−1) for electron temperatures T exceeding TL[≡(2/9)(1−4n/nc)(mc2)]. The well-known result for the pump coupling as k0v0/4 is only valid for TTL and by a hyperbola for T
ISSN:1070-664X
1089-7674
DOI:10.1063/1.4928092