Linear stability analysis of the kinetic internal kink mode with the sheared poloidal flow

The effects of the sheared poloidal flow on the m=1 (poloidal mode number) and n=1 (toroidal mode number) kinetic internal kink mode are simulated by the gyro-reduced MHD code (GRM3D-2F) which is a two-field and two-fluid gyro-reduced MHD model including the effects of electron inertia and the perturbed electron pressure gradients along the magnetic field. The linear stability analysis by using the linearlized version of GRM3D-2F shows that the kinetic internal kink mode is stabilized by the sheared poloidal flow; the weaker instability is stabilized by the smaller sheared poloidal flow. If ρs (ion Larmor radius estimated by the electron temperature) is raised to be ρs > de (de is the collisionless electron skin depth) for the fixed value of de, the instability can be stabilized by the smaller shear flow compared with the case of ρs < de, although the growth rate without the poloidal shear flow is larger for the case of ρs > de. (author)