Hydrogen lines in correlated plasmas

Hydrogen line shapes broadened by Stark effects are calculated for a dense hydrogen plasma created by a Nd:YAG laser focussed into liquid water. The e lectronic density and temperature deduced from the experiment allow to use a Debye Huckel model for the interaction potential between the plasmas ions screened by the electrons. The Stark broadened line shapes, obtained in th e frame of the Model Microfield Method, both for the electronic and ionic c ontributions, are based upon accurate Monte Carlo hydrogen field distributi ons functions, calculated on a neutral point together for the electrons (OC P) and for the ions (screened Coulombic field). The theoretical description allows to cover a wide range of thermodynamical conditions and to predict the emissivity (and opacity) of astrophysical and laboratory plasmas.