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Collisionless tearing modes in cylindrical geometry

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Author
Abstract

Magnetic reconnection due to electron inertia is responsible for fast and violent phenomena in magnetized plasmas in which magnetic energy is converted into electron kinetic energy on very short timescales. To study the nonlinear evolution of a reconnecting mode, the collisionless two- fluid drift-Alfven equations are applied to an equilibrium that consists of a z-independent, cylindrically symmetric current region, with jumps in the radial direction. The Lagrangian advective formulation of the two-fluid equations makes it possible to use the powerful contour dynamics ( CD) method to study linear stability and calculate numerically the nonlinear evolution of a tearing unstable equilibrium using a two- fluid model. The analytical expressions obtained for the linear dispersion relation are in good agreement with the CD simulations.

Year of Publication
2008
Journal
Plasma Physics and Controlled Fusion
Volume
50
Number
3
Number of Pages
19
Date Published
Mar
Type of Article
Article
ISBN Number
0741-3335
Accession Number
ISI:000254359700005
URL
PId
edb1e606fb8ff49e70fc724c4c369fd4
Alternate Journal
Plasma Phys. Control. Fusion
Journal Article
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