Investigation of Induced Force Distribution Profiles in Coaxial Plasma Device

This paper presents the results of the experimental investigations of the axial distribution of magnetic and electric forces profiles. More over, is decreases the the oretical estimation of radial and axial plasma current sheath density along the inter electrode discharge region of a 1.5 KJ coaxial Nitrogen plasma discharge device with negative inner electrode polarity. All the data are taken at the average value of inner and outer electrodes radii and along the coaxial electrodes. Maxwell's equations are used in the present work. This deviceis energized by a condenser bank of 30 μf capacity with charging voltage of 10 KV and the discharge is operated with Nitrogen gas of a pressure ranging from 1 to 2.2 Torr. This system delivers a peak discharge current of 56 KA with a periodic time of 32 μs. Dependence of Nitrogen gas pressure s on the maximum value of different magnetic and electric forces which affect the Plasma Current Sheath ( PCS ) motion in different directions of (r, θ, z) and during the axial phase are discussed to get the optimum discharge conditions to operate the coaxial plasma device under consideration. Also the effect of N₂ gas pressure on the helical performance of PCS motion is studied at different axial distances along the coaxial electrodes