Spectroscopic Measurement of Electron Density and Temperature in Argon-Hydrogen Plasma Jet

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Measurements have been made of electron densities and temperatures in an argonhydrogen gas mixture plasma jet using the Griem-Kolb-Shen theory for the Stark profile of the H_β line and Inglis-Teller's formula in the Balmer lines. The true intensity distribution for the H_β line has been obtained by taking into account the background spectrum due to argon. Both the electron densities and temperatures determined by the two different methods are in reasonable agreement. Under operating conditions of the plasma jet of an arc current of 100A, arc voltage of 62V, and gas flow rate of 23 1/min (Ar:H_2=2:1), the electron densities of the plasma jet at distances of 2 mm, 7 mm, and 12 mm from the head of an anode are (7.25±1.10)×10^<16> cm^<-3>, (4.16±0.62)×10^<16> cm^<-3>, and (2.25±0.33)×10^<16> cm^<-3>, respectively, and the corresponding temperatures are (12,100±300)°K, (11,100±200)°K, and (10,300±200)°K, respectively.
社団法人応用物理学会の論文
1966-08-15