Published September 28, 1987
| Published
Journal Article
Open
Observation of fast stochastic ion heating by drift waves
- Creators
- McChesney, J. M.
- Stern, R. A.
-
Bellan, P. M.
Abstract
With use of laser-induced fluorescence in the Caltech Encore tokamak, anomalously fast (40× classical) ion heating has been observed and found to correlate with the presence of large-amplitude drift-Alfvén waves. Using numerical simulations we demonstrate that the heating is stochastic and occurs when ion displacement due to polarization drift becomes comparable to the perpendicular wavelength, i.e., when k⊥^2φ̃/ωciB0≃1. Stochastic heating may also be the cause of the anomalously high ion temperatures observed in reverse-field pinches.
Additional Information
© 1987 The American Physical Society. Received 23 April 1987. We thank Mr. F. Cosso for his assistance with electronics. One of us (R.A.S.) would like to thank the Sherman Fairchild Foundation for a fellowship. This work was supported by National Science Foundation Grant No. PHY-8312489.Attached Files
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Additional details
- Eprint ID
- 9369
- Resolver ID
- CaltechAUTHORS:MCCprl87
- Sherman Fairchild Foundation
- NSF
- PHY-8312489
- Created
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2007-12-16Created from EPrint's datestamp field
- Updated
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2021-11-08Created from EPrint's last_modified field