Direct Signature of Light-Induced Conical Intersections in Diatomics

作者:Halasz G J; Vibok A*; Cederbaum L S
来源:Journal of Physical Chemistry Letters, 2015, 6(3): 348-354.
DOI:10.1021/JZ502468d

摘要

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 photochssociation process of the D-2(+) molecule carefully, we found a robust effect in the angular distribution of the photofragrnents that serves as a direct signature of the LICI, providing undoubted evidence of its existence.

  • 出版日期2015-2-5