Observation of electron temperature anisotropy in the magnetic filter of a hot cathode discharge

Abstract

Abstract Instabilities arising from electron temperature in an ambient magnetic field when measured parallel and perpendicular to it could influence plasma stability and have effect on plasma diffusion. A planar Langmuir probe measures this instability in the double plasma device in the magnetic filter field region and it is found that the electron temperature measured parallel and perpendicular to the filter region is not equal. This anisotropy is also found to vary with filament current and working pressure.