Aufsatz
Femtosecond dynamics of molecular and cluster ionization and fragmentation
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.
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. 83-86Collections
Publikationen (Experimentalphysik III - Femtosekundenspektroskopie und ultraschnelle Laserkontrolle)Citation
@article{urn:nbn:de:hebis:34-2008102924983,
author={Baumert, Thomas and Thalweiser, Rainer and Weiß, Volker C. and Gerber, Gustav},
title={Femtosecond dynamics of molecular and cluster ionization and fragmentation},
year={1993}
}
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2008-10-29T09:58:21Z 2008-10-29T09:58:21Z 1993 3-540-56475-6 0-387-56475-6 urn:nbn:de:hebis:34-2008102924983 http://hdl.handle.net/123456789/2008102924983 188322 bytes application/pdf eng Urheberrechtlich geschützt https://rightsstatements.org/page/InC/1.0/ 530 Femtosecond dynamics of molecular and cluster ionization and fragmentation Aufsatz 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. open access 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 Baumert, Thomas Thalweiser, Rainer Weiß, Volker C. Gerber, Gustav Extern
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