A SYSTEM FOR AND RESULTS OF SIMULTANEOUS SPECTRAL DETERMINATION OF THE ELECTRON NUMBER DENSITY AND TEMPERATURE IN A HIGHLY IONIZED PLASMA OF INERT-GASES

An automatic system is described for spectral diagnostics of steady-st ate are plasma, which consists of a diffraction spectrometer, photodio de arrays, and PC/AT computer. Results are presented of simultaneous h igh-accuracy determination of the electron temperature and number dens ity in a stabilized high-current argon are in a diverging-channel plas ma generator. The system provides an accuracy of measurements up to 3- 5%. Stark-broadening constants were obtained from the measurements for several ArI and ArII lines in the visible, UV, and IR spectral region s.