  K-line profiles emitted from a warm dense plasma environment are used for
diagnostics of Ar droplet plasmas created by high energy laser pulses.
Analyzing the temporally and spacially integrated spectra, we infer temperature
gradients within the Ar droplet from cold temperatures of the order of some 10
eV up to higher temperatures of 250 eV and beyond. To characterize the
influence of the warm and dense environment on the emitters, plasma screening
is considered within a perturbative approach to the Hamiltonian. The plasma
affects the many-particle system resulting in energy shifts of emission as well
as ionization energies due to electron-ion and electron-electron interaction.
With this approach we get a good reproduction of spectral features that are
strongly influenced by ionization and excitation processes within the plasma.
Comparing with the widely known FLYCHK code and the temperature distribution
given in the original paper, counting for internal degrees of freedom (bound
states) and treating pressure ionization within our quantum statistical
approach results in a more detailed temperature-density-relation and leads to
different results for the inferred temperature distribution.
