Düsseldorf 2007 – wissenschaftliches Programm
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P: Fachverband Plasmaphysik
P 22: Poster
P 22.4: Poster
Donnerstag, 22. März 2007, 16:30–18:30, Poster A
Ionization dynamics in nanoplasmas interacting with intense laser fields — •Thomas Bornath1, Paul Hilse2, and Manfred Schlanges2 — 1Institut für Physik, Universität Rostock, 18051 Rostock — 2Institut für Physik, Ernst-Moritz-Arndt-Universität Greifswald, 17487 Greifswald
The interaction of intense laser fields with clusters is investigated theoretically using the nanoplasma model. Motivated by recent experiments with dual pulse excitation, special attention is directed on the ionization dynamics. The yield of highly charged ions is sensitive to the delay between the two pulses which is connected with resonance phenomena in the excitation. The inclusion of screening effects into the description of ionization processes leads in the calculation to increased yields of highly charged ions. There is also an influence on the dynamics of the laser cluster interaction, e.g., on the description of temperature, expansion velocity and changes in the optimal delay times.
This work was supported by the Deutsche Forschungsgemeinschaft in SFB 652 "Strong correlations and collective phenomena in radiation fields: Coulomb systems, clusters and particles".