Drift dissipative instability in a two temperature plasma |
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Authors: | B N Goswami Y S Satya V H Kulkarni |
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Institution: | (1) Physical Research Laboratory, 380 009 Ahmedabad |
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Abstract: | The presence of a small amount of relatively cold electrons in an otherwise hot plasma reduces the ion sound speed in the
medium and hence reduces the growth rate of the drift dissipative ion acoustic mode in an inhomogeneous weakly ionized plasma.
This is expected to improve the confinement time in certain magnetic confinement schemes. The propagation of a small but finite
amplitude mode in the presence of ion viscosity is also investigated by using reductive perturbation method. It is shown that,
when the damping due to ion viscosity is stronger than the growth due to collisions, there exists a stationary shock solution. |
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Keywords: | Plasma instabilities ion viscosity |
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