Nonlinear evolution of collisionless and semicollisional tearing modes

Details Nonlinear evolution of collisionless and semicollisional tearing modes Nonlinear evolution of collisionless and semicollisional tearing modes

Aug 1977

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977phrvl..39..453d&link_type=abstract

Physical Review Letters, vol. 39, Aug. 22, 1977, p. 453-456.

Physics

59

Collisional Plasmas, Collisionless Plasmas, Electron Diffusion, Magnetohydrodynamic Stability, Tokamak Devices, Evolution (Development), Magnetic Field Configurations, Modal Response, Nonlinear Equations, Plasma Control, Plasma Layers, Toroidal Plasmas

Scientific paper

The evolution of a single tearing mode is investigated. The 'collisionless' and 'collisional' tearing modes nonlinearly evolve into the 'semicollisional' regime where the dynamics of the 'singular layer' are dominated by electron diffusion along the perturbed magnetic surfaces. The 'semicollisional' mode grows algebraically in the nonlinear phase, as in the 'collisional' calculation of Rutherford (1973).

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