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. doi:10.1103/PhysRevLett.57.2383. https://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 | ||||||
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| 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. | ||||||
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| Issue or Number: | 19 | ||||||
| DOI: | 10.1103/PhysRevLett.57.2383 | ||||||
| Record Number: | CaltechAUTHORS:BELprl86 | ||||||
| Persistent URL: | https://resolver.caltech.edu/CaltechAUTHORS:BELprl86 | ||||||
| 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: | 08 Nov 2021 20:58 |
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