Experimental Study on the Drift-Alfvén Modes in a Collisional Current-Carrying Finite-β Plasma

Abstract

A surface-localized mode governing resistive drift-Alfvén mode is experimentally observed in a collisional, current-carrying finite-β plasma, accompanied by an electron diamagnetic-drift frequency spectrum. The half-wavelength travelling along the plasma column with the Alfvén velocity determines the Alfvén mode. The spatial distribution and the phase relation of magnetic components are presented.