Microfield Fluctuations and Spectral Line Shapes in Strongly Coupled Two–Component Plasmas

The spectral line shapes for hydrogen–like heavy ion emitters embedded in strongly correlated two–component electron–ion plasmas are investigated with numerical simulations. For that purpose the microfield fluctuations are calculated by molecular dynamics simulations where short range quantum effects are taken into account by using a regularized Coulomb potential for the electron–ion interaction. The microfield fluctuations are used as input in a numerical solution of the time–dependent Schrodinger equation for the radiating electron. In distinction to the standard impact and quasistatic approximations the method presented here allows to account for the correlations between plasma ions and electrons. The shapes of the Lyα–line in Al are investigated in the intermediate regime. The calculations are in good agreement with experiments on the Lyα–line in laser generated plasmas (© 2010 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim)