Abstract
Space resolved high resolution spectroscopic methods have shown that dielectronic satellite emission in high energy laser produced plasmas is confined to the area of highest density and temperature. Employing satellite transitions near Lyα we demonstrate, that opacity free temperature and density diagnostic can be based solely on the satellite transitions 2 lnl′→1s nl′ + hν. The exclusion of the resonance line transition in the analysis provides an opacity free diagnostic method with limited need for spatial deconvolution. 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.
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