Alfvén current drive in magnetic traps
- 1 March 1995
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review E
- Vol. 51 (3) , 2662-2664
- https://doi.org/10.1103/physreve.51.2662
Abstract
A general approach to the Alfvén current-drive problem is developed in this paper. The covariant-form expression for the longitudinal drag force, which can be applied to any magnetic traps (both closed and open), is obtained. For closed magnetic traps, the surface-averaged high-frequency driving force is derived. For axially symmetric tokamaks with an arbitrary transverse cross section, a simple expression for the force is found. It is shown that the magnetohydrodynamic approach can be used to get the oscillating currents on which the time-averaged force depends.Keywords
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