Theory and simulation of lower-hybrid drift instability for current sheet with guide field

Yoon, P. H.; Lin, Y.; Wang, X. Y.; Lui, A. T. Y.
November 2008
Physics of Plasmas;11/1/2008, Vol. 15 Issue 11, p112103
Academic Journal
The stability of a thin current sheet with a finite guide field is investigated in the weak guide-field limit by means of linear theory and simulation. The emphasis is placed on the lower-hybrid drift instability (LHDI) propagating along the current flow direction. Linear theory is compared against the two-dimensional linear simulation based on the gyrokinetic electron/fully kinetic ion code. LHDI is a flute mode characterized by k·Btotal=0; hence, it is stabilized by a finite guide field if one is confined to k vector strictly parallel to the cross-field current. Comparison of the theory and simulation shows qualitatively good agreement.


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