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Stabilization of collisional drift waves by kinetic Alfvén waves

Published online by Cambridge University Press:  13 March 2009

C. Kar ,
S. K. Majumdar  and
A. N. Sekar Iyengar
C. Kar
Affiliation:
Saha Institute of Nuclear Physics, AF/1, Bidhannagar, Calcutta 700064, India
S. K. Majumdar
Affiliation:
Saha Institute of Nuclear Physics, AF/1, Bidhannagar, Calcutta 700064, India
A. N. Sekar Iyengar
Affiliation:
Saha Institute of Nuclear Physics, AF/1, Bidhannagar, Calcutta 700064, India
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Abstract

We have investigated a mode-coupling mechanism between kinetic Alfvén waves and a collisional drift wave in an inhomogeneous cylindrical plasma. Drift waves satisfying the condition k⊥D > 1/r0 (where r0 is the radius of the plasma cylinder) are stabilized by the low-frequency ponderomotive force generated by the kinetic Alfvén waves. For typical plasma parameters and a moderate level of Alfven-wave intensity the stabilization factor is comparable to the destabilization mechanism due to collisions.

Type
Research Article
Information
Journal of Plasma Physics , Volume 47 , Issue 2 , April 1992 , pp. 249 - 260
Copyright
Copyright © Cambridge University Press 1992

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