Title :
Oscillating two-stream instability of a lower hybrid wave in an inhomogenous plasma
Author :
Prasad, P. V Siva Rama ; Kumar, Ajit ; Singh, Sanjay
Author_Institution :
Dept. of Phys., Indian Inst. of Technol., New Delhi, India
fDate :
8/1/1989 12:00:00 AM
Abstract :
The effect of the density inhomogeneity on the oscillating two-stream instability of a lower hybrid pump wave with a finite wavelength is investigated. The density inhomogeneity introduces dephasing that restricts the interaction region where the matching conditions hold. The loss of energy due to convection from this region introduces a certain convection threshold for the onset of this instability. The coupled differential equations are solved in Fourier space by converting them into an uncoupled eigenvalue equation and then applying a quantization condition. Expressions are obtained for the growth rate and the convective threshold, and the results are applied to the Princeton Large Torus parameters
Keywords :
convection; differential equations; eigenvalues and eigenfunctions; plasma density; plasma instability; plasma oscillations; plasma toroidal confinement; plasma waves; Fourier space; Princeton Large Torus parameters; convection; convection threshold; coupled differential equations; density inhomogeneity; dephasing; growth rate; inhomogenous plasma; interaction region; lower hybrid wave; matching conditions; oscillating two-stream instability; quantization condition; uncoupled eigenvalue equation; Differential equations; Eigenvalues and eigenfunctions; Electrons; Heating; Helium; Plasma applications; Plasma density; Plasma waves; Quantization; Resonance;
Journal_Title :
Plasma Science, IEEE Transactions on
