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Please use this identifier to cite or link to this item: http://nbn-resolving.de/urn:nbn:de:hebis:34-2008102924925

Title: Femtosecond time-resolved molecular multiphoton ionization and fragmentation of Na_2
Other Titles: Experiment and quantum mechanical calculations
Authors: Engel, VolkerBaumert, ThomasMeier, ChristophGerber, Gustav
???metadata.dc.subject.ddc???: 530 - Physik (Physics)
Issue Date: 1993
Citation: In: Zeitschrift für Physik / D. - Berlin [u.a.] : Springer, 28.1993, S. 37-47
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.
URI: urn:nbn:de:hebis:34-2008102924925
ISSN: 0178-76830722-3277
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