Bellan, P. M. (1986) Adverse Consequences of a Moving Vacuum-Plasma Boundary on Axisymmetric ac Helicity Injection. Physical Review Letters, 57 (19). pp. 2383-2386. ISSN 0031-9007 http://resolver.caltech.edu/CaltechAUTHORS:BELprl86
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Abstract
The recent prediction of Liewer, Gould, and Bellan that a moving plasma-vacuum boundary significantly lowers the effectiveness of ac helicity injection is generalized by resolution of the apparent discrepancy between the helicity-conservation equations of Jensen and Chu and of Moffatt. It is shown that, if there are axisymmetric circular flux surfaces and a moving vacuum-plasma boundary, then the helicity injected by oscillating fields (if net injection occurs) is simply consumed by an increase in helicity dissipation due to the same oscillating fields.
| Item Type: | Article |
|---|---|
| Additional Information: | ©1986 The American Physical Society. Received 18 June 1986. It is a pleasure to acknowledge useful discussions with R.W. Gould, M.S. Schalit, and P.C. Liewer. This work was supported by the National Science Foundation under Grant No. ECS-8414541. |
| Record Number: | CaltechAUTHORS:BELprl86 |
| Persistent URL: | http://resolver.caltech.edu/CaltechAUTHORS:BELprl86 |
| Alternative URL: | http://dx.doi.org/10.1103/PhysRevLett.57.2383 |
| Usage Policy: | No commercial reproduction, distribution, display or performance rights in this work are provided. |
| ID Code: | 9346 |
| Collection: | CaltechAUTHORS |
| Deposited By: | Archive Administrator |
| Deposited On: | 14 Dec 2007 |
| Last Modified: | 26 Dec 2012 09:47 |
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