Technique for Plasma Diagnostics Based on Resonance Lines of Ne-Like Kr XXVII Ion and Its Satellites

The X-ray spectral diagnostics of laser plasma of heavy elements that does not contain few-electron ions is considered. The X-ray spectral method for measuring the temperature and density of laser plasma of krypton cluster targets is developed. It is based on analyzing resonance spectral lines of Ne-like krypton ions Kr XXVII and their two-electron satellites arising due to transitions in Na- and Mg-like Kr XXVI and Kr XXV ions. Using the results of the calculations performed, it is possible to determine the ion density of plasma in the range of 1017–1021 cm–3 and the electron temperature in the range of 200–1000 eV. It is shown that one spectrometer with the spherically curved quartz crystal, which has a sufficiently high spectral and spatial resolution, can be used for experimental recording all required diagnostic spectral lines of krypton ions.