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Collisionless tearing in a field-reversed sheet pinch assuming nonparallel propagationThe problem of collisionless linear tearing is examined assuming a wave vector with a component normal to the equilibrium field. The geometry is defined and the general form of the linear dispersion equation is calculated. The linear theory results when k is parallel to B are reviewed, and Ampere's law is calculated for the external adiabatic region when k times B does not equal zero, using two-fluid theory. A solution is obtained for the approximate form of the perturbed currents and vector potential assuming quasi-parallel k. The resonant current contributions within the singular layer are calculated, obtaining an estimate of the dispersion equation. The form of the adiabatic currents within the singular layer is calculated, showing that an x-z current system persists even in the limit k perpendicular to B goes to zero. Finally, the perturbed vector potential solutions across the singular layer are matched to obtain the shape of the complete eigenfunction.
Document ID
19850041202
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Quest, K. B.
(Los Alamos National Laboratory Los Alamos, NM, United States)
Coroniti, F. V.
(California, University Los Angeles, CA, United States)
Date Acquired
August 12, 2013
Publication Date
February 1, 1985
Publication Information
Publication: Journal of Geophysical Research
Volume: 90
ISSN: 0148-0227
Subject Category
Geophysics
Accession Number
85A23353
Funding Number(s)
CONTRACT_GRANT: NSF ATM-81-19544
CONTRACT_GRANT: NGL-05-007-190
CONTRACT_GRANT: NAS10-23726
Distribution Limits
Public
Copyright
Other

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