NEW EVALUATION OF STARK-BROADENING OF 6965 ANGSTROM ARI LINE INCLUDING LEVELS OF LIKE AND UNLIKE PARENTAGE

Significant departures between theoretical predictions and experimenta l results on Ar I line profiles in high electron density plasmas are p resent in the literature. The purpose of this paper is to extend a pre vious Stark calculation already well tested for hydrogen-like atom lin es to the case of the 6965.43 Angstrom, Ar I line taking into account the contribution of the interacting levels of like and unlike parentag e. A comparison is made with the experimental profiles obtained in our laboratory by flashtube electrical discharges with electron densities in the range 5 x 10(17)-10(18) cm(-3) and temperatures from 16 500 to 18 700 K. This calculation gives a better agreement with the experime ntal data than the previous theoretical predictions.