Derivation of paleoclassical key hypothesis
- University of Wisconsin, Madison, Wisconsin 53706-1609 (United States)
The paleoclassical model of radial electron heat transport in resistive, current-carrying toroidal plasmas is based on a key hypothesis--that electron guiding centers move and diffuse with radially localized annuli of poloidal magnetic flux. This hypothesis is shown to result from transforming the drift-kinetic-equation to poloidal flux coordinates in situations where this flux is governed by a diffusion equation and analyzing the mathematical characteristic curves (guiding center trajectories) of the resultant drift-kinetic equation on the magnetic field diffusion time scale {tau}{sub {eta}}{identical_to}a{sup 2}/6D{sub {eta}}. These effects add a {tau}{sub {eta}} time-scale Fokker-Planck-type spatial diffusion operator to the drift-kinetic equation.
- OSTI ID:
- 20974907
- Journal Information:
- Physics of Plasmas, Journal Name: Physics of Plasmas Journal Issue: 4 Vol. 14; ISSN PHPAEN; ISSN 1070-664X
- Country of Publication:
- United States
- Language:
- English
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