An analytical approach to evaluating magnetic-field closure and topological changes in FRC devices

We describe mathematical methods based on optimizing a modified non-linear flux function (MFF) to evaluate whether odd-parity perturbations affect the local closure of magnetic field lines in field-reversed configurations. Using the MFF methodology, quantitative formulas are derived that provide the...

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Bibliographic Details
Published in:Physics of plasmas 2022-07, Vol.29 (7)
Main Authors: Ahsan, T., Cohen, S. A.
Format: Article
Language:English
Subjects:
Perturbation
Plasma physics
Topology
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Summary:We describe mathematical methods based on optimizing a modified non-linear flux function (MFF) to evaluate whether odd-parity perturbations affect the local closure of magnetic field lines in field-reversed configurations. Using the MFF methodology, quantitative formulas are derived that provide the shift of the field minimum and the threshold for field-line opening, a discontinuous change in field topology.
ISSN:1070-664X
1089-7674
DOI:10.1063/5.0090163