Analysis of X-ray spectra of laser produced high density plasmas

X-ray spectra of laser-produced highly charged gold-ion plasma have been studied theoretically. Based on a precise non-empirical multi-configuration Dirac-Fock calculation, a new model NISEM (Non-Interacting Spectator Electron Model) is proposed to take into account the effect from numerous spectator satellite lines. In the framework of NISEM, experimental spectra are reproduced reasonably well by the present theory.