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Aufsatz
Femtosecond time-resolved molecular multiphoton ionization and fragmentation of Na_2
(Experiment and quantum mechanical calculations)
Abstract
We present a comparison between experimental and theoretical results for pump/probe multiphoton ionizing transitions of the sodium dimer, initiated by femtosecond laser pulses. It is shown that the motion of vibrational wavepackets in two electronic states is probed simultaneously and their dynamics is reflected in the total Na^+_2 ion signal which is recorded as a function of the time delay between pump and probe pulse. The time dependent quantum calculations demonstrate that two ionization pathways leading to the same final states of the molecularion exist: one gives an oscillating contribution to the ion signal, the other yields a constant background. From additional measurements of the Na^+ -transient photofragmentation spectrum it is deduced that another ionization process leading to different final ionic states exists. The process includes the excitation of a doubly excitedbound Rydberg state. This conclusion is supported by the theoretical simulation.
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Publikationen (Experimentalphysik III - Femtosekundenspektroskopie und ultraschnelle Laserkontrolle)Citation
@article{urn:nbn:de:hebis:34-2008102924925,
author={Engel, Volker and Baumert, Thomas and Meier, Christoph and Gerber, Gustav},
title={Femtosecond time-resolved molecular multiphoton ionization and fragmentation of Na_2},
year={1993}
}
0500 Oax 0501 Text $btxt$2rdacontent 0502 Computermedien $bc$2rdacarrier 1100 1993$n1993 1500 1/eng 2050 ##0##urn:nbn:de:hebis:34-2008102924925 3000 Engel, Volker 3010 Baumert, Thomas 3010 Meier, Christoph 3010 Gerber, Gustav 4000 Femtosecond time-resolved molecular multiphoton ionization and fragmentation of Na_2 :Experiment and quantum mechanical calculations / Engel, Volker 4030 4060 Online-Ressource 4085 ##0##=u http://nbn-resolving.de/urn:nbn:de:hebis:34-2008102924925=x R 4204 \$dAufsatz 4170 7136 ##0##urn:nbn:de:hebis:34-2008102924925
<resource xsi:schemaLocation="http://datacite.org/schema/kernel-2.2 http://schema.datacite.org/meta/kernel-2.2/metadata.xsd"> 2008-10-29T09:52:45Z 2008-10-29T09:52:45Z 1993 0178-7683 0722-3277 urn:nbn:de:hebis:34-2008102924925 http://hdl.handle.net/123456789/2008102924925 1141747 bytes application/pdf eng Urheberrechtlich geschützt https://rightsstatements.org/page/InC/1.0/ 530 Femtosecond time-resolved molecular multiphoton ionization and fragmentation of Na_2 Aufsatz We present a comparison between experimental and theoretical results for pump/probe multiphoton ionizing transitions of the sodium dimer, initiated by femtosecond laser pulses. It is shown that the motion of vibrational wavepackets in two electronic states is probed simultaneously and their dynamics is reflected in the total Na^+_2 ion signal which is recorded as a function of the time delay between pump and probe pulse. The time dependent quantum calculations demonstrate that two ionization pathways leading to the same final states of the molecularion exist: one gives an oscillating contribution to the ion signal, the other yields a constant background. From additional measurements of the Na^+ -transient photofragmentation spectrum it is deduced that another ionization process leading to different final ionic states exists. The process includes the excitation of a doubly excitedbound Rydberg state. This conclusion is supported by the theoretical simulation. open access Experiment and quantum mechanical calculations In: Zeitschrift für Physik / D. - Berlin [u.a.] : Springer, 28.1993, S. 37-47 Engel, Volker Baumert, Thomas Meier, Christoph Gerber, Gustav Extern 33.80.Eh 33.10.-n </resource>
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