The influence of an axial magnetic field on an abnormal glow discharge in Nitrogen at moderate pressure

Abstract

In abnormal glow discharge under d.c, excitation at different pressure in a varying axial magnetic field in the range (0 to 6.5G) some measurements of plasma parameters, glow discharge resistance Rg electrical conductivity ag and electron temperature Te have been carried out for various discharge currents using double probe method, The results show that the average discharge current increase and the corresponding voltage across the discharge gap decreased consequently glow discharge resistance and electron temperature decreased with the increasing magnetic field while the electrical conductivity increases according to that. This is due to magnetic field confinement which restricts expansion of the plasma charged practices. These measurements show a good agreement with the previous studies.

Keywords

• axial magnetic field
• abnormal glow discharge
• nitrogen