Opacity free and space resolved X-ray diagnostics based on satellite lines near H-like Lyα of highly charged ions

For the interpretation of the experimental data we have developed a collisional-radiative model involving autoionising states with high-n spectator electrons. The atomic data for dielectronic satellite transitions are calculated with different methods and compared also in view for diagnostic applications. For n=2 satellite transitions we find in general good agreement, however, for higher quantum numbers n, the agreement of data is found to be not satisfactory.