Osnabrück 2002 – wissenschaftliches Programm

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A: Atomphysik

A 9: Poster I

A 9.2: Poster

Mittwoch, 6. März 2002, 11:00–13:00, Schloss

A New Set-up to Investigate the Coulomb Explosion of Metal Clusters — •Paul Radcliffe, Silvio Teuber, Thomas Fennel, Tilo Döppner, Josef Tiggesbäumker und Karl-Heinz Meiwes-Broer — Universität Rostock, FB Physik, Universitätsplatz 3, 18051 Rostock

Clusters of metal atoms in intense femtosecond laser fields undergo multi-ionization. In contrast to atoms, the interaction leads to very efficient charging of the cluster, where hundreds of electrons are ejected. Pump-probe experiments have shown the time dependence of this charging process, giving insight into how the electromagnetic radiation couples to the cluster [1]. To further improve these experiments, and to allow the study of a wider range of materials, a magnetron cluster source was constructed [2]. The usability of this source for the Coulomb explosion experiment is demonstrated for silver clusters.

[1] T. Döppner, S. Teuber, M. Schumacher, J. Tiggesbäumker, K.H. Meiwes-Broer, Appl. Phys. B 71, 357-360 (2000)

[2] Hellmut Haberland, Martin Mall, Michael Moseler, You Qiang, Thomas Reiners, and Yonca Thurner, J. Vac. Sci. Technol. A 12