Ideal internal kink modes in a differentially rotating cylindrical plasma |
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Authors: | A. B. Mikhailovskii J. G. Lominadze R. M. O. Galvão A. P. Churikov N. N. Erokhin V. D. Pustovitov S. V. Konovalov A. I. Smolyakov V. S. Tsypin |
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Affiliation: | (1) Plasma Physics Research Institute, AEOI, P. O. Box 14399-51113, Amirabad, Tehran, Iran;(2) School of Electrical Engineering, Sharif University of Technology, P. O. Box 11365-9363, Tehran, Iran; |
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Abstract: | The Velikhov effect leading to magnetorotational instability (MRI) is incorporated into the theory of ideal internal kink modes in a differentially rotating cylindrical plasma column. It is shown that this effect can play a stabilizing role for suitably organized plasma rotation profiles, leading to suppression of MHD (magnetohydrodynamic) instabilities in magnetic confinement systems. The role of this effect in the problem of the Suydam and the m = 1 internal kink modes is elucidated, where m is the poloidal mode number. Published in Russian in Fizika Plazmy, 2008, Vol. 34, No. 7, pp. 589–597. The text was submitted by the authors in English. |
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