Datum
1991Autor
Baumert, ThomasBühler, B.Grosser, M.Thalweiser, RainerWeiss, V.Wiedenmann, ErnstGerber, GustavSchlagwort
530 PhysikMetadata
Zur Langanzeige
Aufsatz
Femtosecond time-resolved wave packet motion in molecular multiphoton ionization and fragmentation
Zusammenfassung
The dynamics of molecular multiphoton ionization and fragmentation of a diatomic molecule (Na_2) have been studied in molecular beam experiments. Femtosecond laser pulses from an amplified colliding-pulse mode-locked (CPM) ring dye laser are employed to induce and probe the molecular transitions. The final continuum states are analyzed by photoelectron spectroscopy, by ion mass spectrometry and by measuring the kinetic energy of the formed ionic fragments. Pump-probe spectra employing 70-fs laser pulses have been measured to study the time dependence of molecular multiphoton ionization and fragmentation. The oscillatory structure of the transient spectra showing the dynamics on the femtosecond time scale can best be understood in terms of the motion of wave packets in bound molecular potentials. The transient Na_2^+ ionization and the transient Na^+ fragmentation spectra show that contributions from direct photoionization of a singly excited electronic state and from excitation and autoionization of a bound doubly excited molecular state determine the time evolution of molecular multiphoton ionization.
Zitierform
In: The journal of physical chemistry. Washington, DC : American Chemical Society. 95 (1991), Nr. 21, S. 8103-8110Sammlung(en)
Publikationen (Experimentalphysik III - Femtosekundenspektroskopie und ultraschnelle Laserkontrolle)Zitieren
@article{urn:nbn:de:hebis:34-2008102724854,
author={Baumert, Thomas and Bühler, B. and Grosser, M. and Thalweiser, Rainer and Weiss, V. and Wiedenmann, Ernst and Gerber, Gustav},
title={Femtosecond time-resolved wave packet motion in molecular multiphoton ionization and fragmentation},
year={1991}
}
0500 Oax 0501 Text $btxt$2rdacontent 0502 Computermedien $bc$2rdacarrier 1100 1991$n1991 1500 1/eng 2050 ##0##urn:nbn:de:hebis:34-2008102724854 3000 Baumert, Thomas 3010 Bühler, B. 3010 Grosser, M. 3010 Thalweiser, Rainer 3010 Weiss, V. 3010 Wiedenmann, Ernst 3010 Gerber, Gustav 4000 Femtosecond time-resolved wave packet motion in molecular multiphoton ionization and fragmentation / Baumert, Thomas 4030 4060 Online-Ressource 4085 ##0##=u http://nbn-resolving.de/urn:nbn:de:hebis:34-2008102724854=x R 4204 \$dAufsatz 4170 7136 ##0##urn:nbn:de:hebis:34-2008102724854
2008-10-27T10:37:15Z 2008-10-27T10:37:15Z 1991 0022-3654 0092-7325 urn:nbn:de:hebis:34-2008102724854 http://hdl.handle.net/123456789/2008102724854 842140 bytes application/pdf eng Urheberrechtlich geschützt https://rightsstatements.org/page/InC/1.0/ 530 Femtosecond time-resolved wave packet motion in molecular multiphoton ionization and fragmentation Aufsatz The dynamics of molecular multiphoton ionization and fragmentation of a diatomic molecule (Na_2) have been studied in molecular beam experiments. Femtosecond laser pulses from an amplified colliding-pulse mode-locked (CPM) ring dye laser are employed to induce and probe the molecular transitions. The final continuum states are analyzed by photoelectron spectroscopy, by ion mass spectrometry and by measuring the kinetic energy of the formed ionic fragments. Pump-probe spectra employing 70-fs laser pulses have been measured to study the time dependence of molecular multiphoton ionization and fragmentation. The oscillatory structure of the transient spectra showing the dynamics on the femtosecond time scale can best be understood in terms of the motion of wave packets in bound molecular potentials. The transient Na_2^+ ionization and the transient Na^+ fragmentation spectra show that contributions from direct photoionization of a singly excited electronic state and from excitation and autoionization of a bound doubly excited molecular state determine the time evolution of molecular multiphoton ionization. open access In: The journal of physical chemistry. Washington, DC : American Chemical Society. 95 (1991), Nr. 21, S. 8103-8110 Baumert, Thomas Bühler, B. Grosser, M. Thalweiser, Rainer Weiss, V. Wiedenmann, Ernst Gerber, Gustav Extern
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