Spectroscopic Consideration of the Plasma generated by Hybrid Method

This report describes the spectroscopic consideration about the generative process of hybrid plasma which was generated by applying the damped pulsed magnetic field to DC plasma jet using the induction coil. DC plasma jet used in experiment was generated at arc current 100A and argon gas flow rate 3l/min. The frequency of the damped pulsed magnetic field was 60.5KHz and the maximum strength of it was 700G. The spectral line intensity from the hybrid plasma and its time variation were measured by a spectroscope with photomultiplier, then the spectroscopic temperature, the electron density and their time variations were obtained. The radial distribution of the increment of the spectral line intensity had off-axis peak characteristics. As the time (t) measured from the start of the damped pulsed magnetic field prceeds, the increment of the spectral line intensity was increased and it reached maximum at t=100μsec. The ratio of it was the largest value in the region of 50&acd