Influence of light-induced conical intersection on the photodissociation dynamics of D2+ starting from individual vibrational levels

G. Halász, András Csehi, A. Vibók, Lorenz S. Cederbaum

Research output: Contribution to journalArticle

25 Citations (Scopus)

Abstract

(Graph Presented) Previous works have shown that dressing of diatomic molecules by standing or by running laser waves gives rise to the appearance of so-called light-induced conical intersections (LICIs). Because of the strong nonadiabatic couplings, the existence of such LICIs may significantly change the dynamical properties of a molecular system. In our former paper (J. Phys. Chem. A 2013, 117, 8528), the photodissociation dynamics of the D2+ molecule were studied in the LICI framework starting the initial vibrational nuclear wave packet from the superposition of all the vibrational states initially produced by ionizing D2. The present work complements our previous investigation by letting the initial nuclear wave packets start from different individual vibrational levels of D2+, in particular, above the energy of the LICI. The kinetic energy release spectra, the total dissociation probabilities, and the angular distributions of the photofragments are calculated and discussed. An interesting phenomenon has been found in the spectra of the photofragments. Applying the light-induced adiabatic picture supported by LICI, explanations are given for the unexpected structure of the spectra.

Original languageEnglish
Pages (from-to)11908-11915
Number of pages8
JournalJournal of Physical Chemistry A
Volume118
Issue number51
DOIs
Publication statusPublished - Dec 26 2014

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Photodissociation
photodissociation
intersections
Wave packets
wave packets
Molecules
Angular distribution
diatomic molecules
vibrational states
Kinetic energy
complement
angular distribution
kinetic energy
dissociation
Lasers
lasers
molecules

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry

Cite this

Influence of light-induced conical intersection on the photodissociation dynamics of D2+ starting from individual vibrational levels. / Halász, G.; Csehi, András; Vibók, A.; Cederbaum, Lorenz S.

In: Journal of Physical Chemistry A, Vol. 118, No. 51, 26.12.2014, p. 11908-11915.

Research output: Contribution to journalArticle

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AU - Cederbaum, Lorenz S.

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AB - (Graph Presented) Previous works have shown that dressing of diatomic molecules by standing or by running laser waves gives rise to the appearance of so-called light-induced conical intersections (LICIs). Because of the strong nonadiabatic couplings, the existence of such LICIs may significantly change the dynamical properties of a molecular system. In our former paper (J. Phys. Chem. A 2013, 117, 8528), the photodissociation dynamics of the D2+ molecule were studied in the LICI framework starting the initial vibrational nuclear wave packet from the superposition of all the vibrational states initially produced by ionizing D2. The present work complements our previous investigation by letting the initial nuclear wave packets start from different individual vibrational levels of D2+, in particular, above the energy of the LICI. The kinetic energy release spectra, the total dissociation probabilities, and the angular distributions of the photofragments are calculated and discussed. An interesting phenomenon has been found in the spectra of the photofragments. Applying the light-induced adiabatic picture supported by LICI, explanations are given for the unexpected structure of the spectra.

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