On simultaneous determination of electron impact width, ion-broadening and ion-dynamic parameter from the shape of plasma broadened non-hydrogenic atom line

Recently, experimental electron impact widths and ion broadening parameters of isolated Kr I lines were reported. In addition, the contribution of Kr II and Kr III ion dynamics to Kr I line widths is determined. Here, on the basis of the critical evaluation of the plasma source, the deconvolution procedure and earlier results by the same authors, possible causes for erroneous line shape recordings and their interpretation, are discussed. To demonstrate the experimental difficulties in the procedure used for Stark broadening parameter measurements, an additional experiment is performed and profiles of plasma-broadened lines are generated. All our new results and the analysis of the plasma source, experimental procedure and reported data of Kr I lines indicate that certain aspects of earlier work need further investigation.