Classical transport in field reversed mirrors [electronic resource] : reactor implications
- Livermore, Calif. : Lawrence Livermore Laboratory, 1980.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy.
- Physical Description:
- Pages: 5 : digital, PDF file
- Additional Creators:
- Lawrence Livermore Laboratory
United States. Department of Energy. Office of Scientific and Technical Information
- Assuming that the field-reversed mirror (or the closely related spheromak) turns out to be stable, the next crucial issue is transport of particles and heat. Of particular concern is the field null on axis (the X-point), which at first glance seems to allow particles to flow out unhindered. We have evaluated the classical diffusion coefficients for particles and heat in field-reversed mirrors, with particular reference to a class of Hill's vortex models. Two fairly surprising results emerge from this study. First, the diffusion-driven flow of particles and heat is finite at the X-points. This may be traced to the geometrical constraint that the current (and hence the ion-electron drag force, which causes cross-field transport) must vanish on axis. This conclusion holds for any transport model. Second, the classical diffusion coefficient D(psi), which governs both particle and heat flux, is finite on the separatrix. Indeed, in a wide class of Hill's vortex equilibria (spherical, oblate, or prolate) D(psi) is essentially independent of psi (except for the usual factor of n(psi), the number density).
- Published through SciTech Connect.
3. symposium on the physics and technology of compact toroids in the magnetic fusion energy program, Los Alamos, NM, USA, 2 Dec 1980.
Auerbach, S.P.; Condit, W.C.
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