Rotating toroidal equilibria of quasi-neutral and non-neutral plasmas
- Department of Physics, University of California at Los Angeles, 405 Hilgard Avenue, Los Angeles, California 90095-1547 (United States)
Starting from the fundamental ion and electron fluid equations, a {open_quotes}master{close_quotes} equilibrium equation set is constructed for axisymmetric toroidal plasmas. These equations retain the effects of different ion and electron densities, temperatures, sheared rotation, and electric forces. The master equation is then examined in various limits including the non-neutral plasma limit. An ordering is assumed which makes the effects of the Reynolds stress, pressure, magnetic stress, and electric field stress all comparable emphasizing the natural transition from the non-neutral case to the quasi-neutral one. For sub-relativistic flows, charge separation effects are only significant for nearly force-free plasmas. A set of equilibrium equations are derived for three different cases: (A) n{sub i}{approx}n{sub e}, (B) n{sub i}{ne}n{sub e}{ne}0, and (C) n{sub i}=0 and n{sub e}{ne}0. In the pure electron plasma case, the resulting equilibrium equation includes the effects of toroidal rotation, poloidal magnetic field, and electron pressure extending the equation of Daugherty and Levy [Phys. Fluids {bold 10}, 155 (1967)]. {copyright} {ital 1998 American Institute of Physics.}
- OSTI ID:
- 604423
- Journal Information:
- Physics of Plasmas, Journal Name: Physics of Plasmas Journal Issue: 6 Vol. 5; ISSN PHPAEN; ISSN 1070-664X
- Country of Publication:
- United States
- Language:
- English
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