Direct Signature of Light-Induced Conical Intersections in Diatomics.
Nonadiabatic effects are ubiquitous in physics, chemistry, and biology. They are strongly amplified by conical intersections (CIs), which are degeneracies between electronic states of triatomic or larger molecules. A few years ago it was revealed that CIs in molecular systems can be formed by laser light, even in diatomics. Because of the prevailing strong nonadiabatic couplings, the existence of such laser-induced conical intersections (LICIs) may considerably change the dynamical behavior of molecular systems. By analyzing the photodissociation process of the D2+ molecule carefully, we found a robust effect in the angular distribution of the photofragments that serves as a direct signature of the LICI, providing undoubted evidence of its existence.
†Department of Information Technology, University of Debrecen, P.O. Box 12, H-4010 Debrecen, Hungary.
G J
GJ
Halász
‡Department of Theoretical Physics, University of Debrecen, P.O. Box 5, H-4010 Debrecen, Hungary.
Á
Á
Vibók
§Theoretische Chemie, Physikalish-Chemisches Institut, Universität Heidelberg, Im Neuenheimer Feld 229, D-69120 Heidelberg, Germany.
L S
LS
Cederbaum
dissociation rate; laser light; light-induced potentials; nonadiabatic couplings