'Parallel' viseous modification of the resistive 'tearint' instability in a cylindrical model of the hard-core pinch

The influence of "parallel" viscosity on the resistive "tearing" mode in a cylindrical model of a plasma is investigated for a hard-core pinch. Iterative solutions of the basic equation indicate that the destabilization suggested by a previous cartesian model is not substantiated, and in fact under extreme shear there is slight stabilization. It is clear that geometrical effects must be properly included in order to obtain an accurate description of the role of parallel viscosity.