Abstract
An experimental study was carried out to examine the effect of strong magnetic field on the characteristics of argon plasma jet. An approximate expression was introduced to the distribution of emission line intensity and the color intensity. The distribution of the emission intensity was compared to that of the color intensity. The modified profiles of the spectral intensity agree well with those of the color intensity. The two-point analysis, that is, a calculation method with only two selected wavelengths in Boltzmann plots, was selected in the evaluation of excitation temperature because the calculation becomes significantly simple. The lateral distribution of excitation temperature obtained from the modified intensity becomes more accurate than that without the approximation. The radial distributions of excitation temperature based on the Abel inversion can be determined by the present approximation. It is found that the simple diagnostic method can utilize for understanding the characteristics on plasma jet.
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