Tearing relaxation and the globalization of transport in field-reversed configurations

Steinhauer, Loren; Barnes, D. C.
September 2009
Physics of Plasmas;Sep2009, Vol. 16 Issue 9, p092505
Academic Journal
Tearing instability of field-reversed configurations (FRC) is investigated using the method of neighboring equilibria. It is shown that the conducting wall position in experiment lies very close to the location needed for tearing stability. This strongly suggests that vigorous but benign tearing modes, acting globally, are the engine of continual self-organization in FRCs, i.e., tearing relaxation. It also explains the “profile consistency” and anomalous loss rate of magnetic flux. In effect, tearing globalizes the effect of edge-driven transport.


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