Measurement of Plasma Parameters on Low Density Plasma in a Magnetic field Produced in Air by Double Electric Probe Within a Toroidal Chamber

Abstract

The measurements of electron temperature and electron density in low density magnetized plasma developed in Air within a toroidal chamber have been carried out by the floating double probe technique in the equivalent resistance method [1,2]. From the variations of probe current with the differential probe voltage,electron temperature and electron number densities can be determined [3]. It has been observed that the electron temperature increases and the radial electron density decreases with the toroidal magnetic field when the double probes are aligned in transverse positions and for axial alignment of the probes with the magnetic field electron temperature decreases where as electron number density increases. The method is also applicable to the continuing discharge where it has the advantage over the single probe of exerting a negligible influence on the discharge [4].