Chen, Liu ; Guzdar, P. N. ; White, R. B. ; Kaw, P. K. ; Oberman, C. (1978) Theory of universal eigenmodes in a sheared magnetic field Physical Review Letters, 41 (9). pp. 649-653. ISSN 0031-9007
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Official URL: http://prl.aps.org/abstract/PRL/v41/i9/p649_1
Related URL: http://dx.doi.org/10.1103/PhysRevLett.41.649
Abstract
Collisionless drift-wave eigenmodes in a sheared magnetic field are analyzed using the WKBJ method. It is found that, for Ls/Ln>(Ls/Ln)c, ion-sound dynamics determines the eigenvalues at small ky2 and the eigenmodes are damped. However, at large ky2, electron dynamics dominates and the eigenmodes become marginally stable. For Ls/Ln(Ls/Ln)c, the eigenmodes are damped for all values of ky2. The critical value (Ls/Ln)c scales as (mi/me)1/4.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to American Physical Society. |
| ID Code: | 30266 |
| Deposited On: | 22 Dec 2010 10:29 |
| Last Modified: | 04 Jun 2011 04:39 |
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