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Please use this identifier to cite or link to this item: http://nbn-resolving.de/urn:nbn:de:hebis:34-2008102924983

Title: Femtosecond dynamics of molecular and cluster ionization and fragmentation
Authors: Baumert, ThomasThalweiser, RainerWeiß, Volker C.Gerber, Gustav
???metadata.dc.subject.ddc???: 530 - Physik (Physics)
Issue Date: 1993
Citation: In: Ultrafast Phenomena VIII : Proceedings of the 8th International Conference Antibes Juan-Les-Pins, France, June 8-12, 1992. - Berlin [u.a.] : Springer, 1993. - S. 83-86
Abstract: The real-time dynamics of molecular (Na_2 . Na_3) and cluster Na_n (n=4-2l) multiphoton ionization and -fragmentation has been studied in beam experiments applying femtosecond pump-probe techniques in combination with ion and electron spectroscopy. Wave packet motion in the dimer Na_2 reveals two independent multiphoton ionization processes while the higher dimensional motion in the trimer Na_3 reflects the chaotic vibrational motion in this floppy system. The first studies of cluster properties (energy, bandwidth and lifetime of intermediate resonances Na^*_n) ) with femtosecond laser pulses give a striking illustration of the transition from "molecule-like" excitations to "surfaceplasma"-like resonances for increasing cluster sizes. Time-resolved fragmentation of cluster ions Na_n^* indicate that direct photo-induced fragmentation processes are more important at short times than the statistical unimolecular decay.
URI: urn:nbn:de:hebis:34-2008102924983
ISBN: 3-540-56475-6
ISSN: 0-387-56475-6
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