Magnetic islands at the field reversal surface in reversed field pinches
作者:
R. I. Pinsker,
A. H. Reiman,
期刊:
Physics of Fluids(00319171)
(AIP Available online 1986)
卷期:
Volume 29,
issue 3
页码: 782-789
ISSN:0031-9171
年代: 1986
DOI:10.1063/1.865933
出版商: AIP
数据来源: AIP
摘要:
In the reversed field pinch (RFP), magnetic field perturbations having zero poloidal mode number and any toroidal mode number are resonant at the field reversal surface. Such perturbations are a particular threat to the RFP because of their weak radial dependence at low toroidal mode number, and because the toroidal field ripple is essentially of this type. The widths of the resulting islands are calculated in this paper. The self‐consistent plasma response is included through the assumption that the plasma relaxes to a Taylor force‐free state. The connection with linear tearing mode theory is established for those limits where arbitrarily large islands result from infinitesimal perturbations. Toroidal effects are considered, and application of the theory to RFP experiments is discussed.
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