New instabilities in magnetized dusty plasma with no spherical grains

Summary form only given, as follows. Summary form only given. In many laboratory and space dusty plasmas the shape of the grains is not a sphere. It seems that the grain structure is an important parameter when it comparable to length of an inhomogeneity or wavelength. In this article it is shown that in any case nonsphericity leads to some important effects. It is found that the magnetic field applied on a grain surface current results in net torque. This torque in the presence of a neutral gas current changes the angular momentum distribution function of dust grains to a shifted one around the suppressed angular velocity. This anisotropy in the distribution function leads to important instabilities.