scholarly journals Electron-acoustic solitary structures in two-electron-temperature plasma with superthermal electrons

2012 ◽  
Vol 339 (1) ◽  
pp. 179-184 ◽  
Author(s):  
H. Chen ◽  
S. Q. Liu
Keyword(s):  
Electron Temperature ◽  
Superthermal Electrons ◽  
Temperature Plasma ◽  
Solitary Structures ◽  
Electron Acoustic

Higher-order electron modes in a two-electron-temperature plasma

1990 ◽  
Vol 43 (2) ◽  
pp. 239-255 ◽  
Author(s):  
R. L. Mace ◽  
M. A. Hellberg
Keyword(s):  
Electron Temperature ◽  
Higher Order ◽  
Hot Electron ◽  
Temperature Plasma ◽  
Critical Curves ◽  
Higher Order Modes ◽  
Electron Acoustic Wave ◽  
Electron Acoustic ◽  
Relationship Of ◽  
The Relationship

We discuss critical curves that allow us to predict, qualitatively, the topological behaviour of higher-order modes in a two-electron-temperature plasma as wavenumber and hot electron fraction are varied. The relationship of these higher-order modes to the electron-acoustic wave is elucidated.

Scattering of electromagnetic waves by hybrid waves in a two-electron-temperature plasma

1991 ◽  
Vol 46 (1) ◽  
pp. 99-106 ◽  
Author(s):  
S. K. Sharma ◽  
A. Sudarshan
Keyword(s):  
Growth Rate ◽  
Electron Temperature ◽  
High Frequency ◽  
Electromagnetic Waves ◽  
Low Frequency ◽  
Lower Hybrid ◽  
Stimulated Scattering ◽  
Coupled Modes ◽  
Temperature Plasma ◽  
Electrostatic Perturbation

In this paper, we use the hydrodynamic approach to study the stimulated scattering of high-frequency electromagnetic waves by a low-frequency electrostatic perturbation that is either an upper- or lower-hybrid wave in a two-electron-temperature plasma. Considering the four-wave interaction between a strong high-frequency pump and the low-frequency electrostatic perturbation (LHW or UHW), we obtain the dispersion relation for the scattered wave, which is then solved to obtain an explicit expression for the growth rate of the coupled modes. For a typical Q-machine plasma, results show that in both cases the growth rate increases with noh/noc. This is in contrast with the results of Guha & Asthana (1989), who predicted that, for scattering by a UHW perturbation, the growth rate should decrease with increasing noh/noc.

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