Düsseldorf 2007 – scientific programme

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MO: Fachverband Molekülphysik

MO 14: Molecular Clusters

MO 14.1: Talk

Monday, March 19, 2007, 16:30–16:45, 6D

MD simulations of laser excited clusters — •Thomas Raitza, Heidi Reinholz, and Gerd Roepke — Universität Rostock; Universitätsplatz 3; 18055 Rostock

The measurements of optical properties are relevant for plasma diagnostics. The investigation of reflectivity and absorption of electromagnetic waves in inhomogeneous media will be done with special attention to laser excited clusters. Interaction of cluster systems with intense laser pulses were investigated via MD simulation. Hydrogen and sodium clusters containing 50 - 500 atoms were calculated. Material properties were included using and discussing different pseudo potentials. Comparison to experimental absorption measurements of Kim et al. [1] and to simulations of Belkacem et al. [2], Ditmire et al. [3] and Fennel et al. [4] are shown.

[1] K. Y. Kim, I. Alexeev, E. Parra, and H. Milchberg; PRL, 90, 023401 (2003)

[2] M. Belkacem, F. Megi, and E. Suraud; Eur. Phys. J. D, 40, 247 (2006)

[3] T. Ditmire, T. Donnelly, A. M. Rubenchik, R. W. Falcone, and M. D. Perry; PRA, 53, 3379 (1996)

[4] T. Fennel, G. F. Bertsch, and K.-H. Meiwes-Broer; Eur. Phys. J. D, 29, 367 (2004)