Reduction of transport in stellarators by self-shielding
- Department of Applied Physics, Columbia University, New York, New York 10027 (United States)
In neoclassical transport theory the parallel viscosity causes the plasma pressure orthogonal to the magnetic field to depend on the poloidal and toroidal angles. If the Fourier components of the perpendicular pressure and the field strength are {ital p}{sub {ital MN}} and {epsilon}{sub {ital MN}}{ital B}{sub 0}, then one obtains strong shielding of a Fourier component of the field when {vert_bar}{ital p}{sub {ital MN}}{vert_bar}/{vert_bar}{epsilon}{sub {ital MN}}{vert_bar}{gt}{ital B}{sup 2}{sub 0}/{mu}{sub 0}. Estimates imply shielding becomes important in a stellarator for {vert_bar}{epsilon}{sub {ital MN}}{vert_bar} smaller than a few tenths of a percent. {copyright} {ital 1996 American Institute of Physics.}
- DOE Contract Number:
- FG02-95ER54333
- OSTI ID:
- 286957
- Journal Information:
- Physics of Plasmas, Journal Name: Physics of Plasmas Journal Issue: 9 Vol. 3; ISSN PHPAEN; ISSN 1070-664X
- Country of Publication:
- United States
- Language:
- English
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