Photodissociation dynamics of the \(D^{+}_{2}\) ion initiated by several different laser pulses

  • Gábor J. Halász
  • András Csehi
  • Ágnes VibükEmail author
Part of the Highlights in Theoretical Chemistry book series (HITC, volume 12)


Nonadiabatic effects are ubiquitous in physics and chemistry. They are associated with conical intersections (CIs) which are degeneracies between electronic states of polyatomic molecules. Recently, it has been recognized that so-called light-induced conical intersections (LICIs) can be formed both by standing or by running laser waves even in diatomics. Owing to the strong nonadiabatic couplings, the appearance of such laser-induced conical intersections (LICIs) may significantly change the dynamical properties of a molecular system. In the present paper we investigate the photodissociation dynamics of \(D^{+}_{2}\) ion initiating the nuclear dynamics from the superposition of all the vibrational states produced by ionizing D2. The kinetic energy release and the angular distribution of the photodissociation products are computed with and without LICI for the several different values of the laser parameters. We performed both one- and two-dimensional calculations, as well. In the first scheme the molecules were rotationally frozen, whereas in the latter one, the molecular rotation is included as a full additional dynamic variable. The results obtained undoubtedly demonstrate that the impact of the LICI on the dissociation dynamics of the \(D^{+}_{2}\) molecule strongly depend upon the laser parameters applied.


Photodissociation Nonadiabatic effect Laser-induced conical intersection Diatomic molecule Pulse length 


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Copyright information

© Springer-Verlag Berlin Heidelberg 2016

Authors and Affiliations

  • Gábor J. Halász
    • 1
  • András Csehi
    • 2
  • Ágnes Vibük
    • 2
    • 3
    Email author
  1. 1.Department of Information TechnologyUniversity of DebrecenDebrecenHungary
  2. 2.Department of Theoretical PhysicsUniversity of DebrecenDebrecenHungary
  3. 3.ELI-ALPS, ELI-HU Non-Profit LtdSzegedHungary

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