Abstract
The parameter dependence of the linear growth rate of collisional drift-tearing mode is investigated numerically and analytically using reduced two-fluid equations. Especially, the effect of parallel thermal transport on the growth rate is clarified. It is newly found that the thermal transport parallel to the ambient magnetic field line destabilizes the collisional drift-tearing mode and the diamagnetic drift frequency acts as an instability source in some parameter regime. With large parallel thermal transport coefficient, the collisional drift-tearing mode could be unstable even if the classical tearing mode is stable.
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