Poloidal force generation by applied radio frequency waves
- Lodestar Research Corporation, 2400 Central Avenue P-5, Boulder, Colorado 80301 (United States)
A theoretical framework is developed for calculating the nonlinear rf forces that can drive sheared poloidal flow in a tokamak plasma. It is shown that the rf-induced flow drive can be calculated without first obtaining an explicit result for the nonlinear distribution function. Instead, for modes satisfying the eikonal approximation, the flow drive can be expressed entirely in terms of moments of the linearized plasma responses. The method is applied to obtain explicit results for poloidal force generation for sheared flow drive applications in a hot plasma slab that supports rf waves of arbitrary polarization. The theory is fully electromagnetic and retains k{sub (perpendicular} {sub sign)}{rho}{sub i}{approx}1 (Bessel function) effects for the ion dynamics without approximation. An illustrative application to the ion Bernstein wave is presented. (c) 2000 American Institute of Physics.
- OSTI ID:
- 20217340
- Journal Information:
- Physics of Plasmas, Vol. 7, Issue 9; Other Information: PBD: Sep 2000; ISSN 1070-664X
- Country of Publication:
- United States
- Language:
- English
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