Abstract
AbstractA plasma composed by helium, argon, and hydrogen in a cascade arc of MAECKER‐SHUMAKER type was examined in this paper. The spectrum of the studied plasma was recorded on the spectral plates by means of a STE 1 spectrograph. A photographic spectrophotometry method was used to determine the intensity and profiles of selected HeI, ArI, ArII, and H lines. On the grounds of the experimental results a spectroscopic diagnostics of the studied plasma has been made using different methods. It was found that there are the non‐equilibrium effects in those plasmas. Observed diversions from the local thermodynamic equilibrium (LTE) could be explained on the grounds of the partial LTE model given by DRAWIN.
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