Numerical studies on linear growth rate of resistive tearing mode in current carrying stellarator fields are presented for various plasma current profiles (flattened, parabolic and peaked) and helical fields ( l =2 and l =3). The linear growth rate is calculated by solving linearized magnetohydrodynamic equation as initial and boundary value problem for various cases of plasma parameters, field configurations and boundary conditions. An l =2 helical field stabilizes the tearing mode but l =3 helical field has a tendency to destabilize it. Effects of the boundary condition on the growth rate are appreciable when a singular surface is near plasma boundary and plasma resistivity is not small.
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K. Ohasa (1980) studied this question.
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