Spin-orbit coupling in O2(v)+O2 collisions: a new energy transfer mechanism

Fabrice Dayou; José Campos-Martinez; Marta I Hernández; Ramón Hernández-Lamoneda

doi:10.1063/1.1759311

Spin-orbit coupling in O2(v)+O2 collisions: a new energy transfer mechanism

J Chem Phys. 2004 Jun 8;120(22):10355-8. doi: 10.1063/1.1759311.

Authors

Fabrice Dayou¹, José Campos-Martinez, Marta I Hernández, Ramón Hernández-Lamoneda

Affiliation

¹ Instituto de Matemáticas y Física Fundamental, Consejo Superior de Investigaciones Científicas, Serrano 123, 28006 Madrid, Spain.

PMID: 15268061
DOI: 10.1063/1.1759311

Abstract

A reduced dimensionality model is used to study the relaxation of highly vibrationally excited O(2)(X (3)Sigma(g) (-),v>/=20) in collisions with O(2)(X (3)Sigma(g) (-),v=0). Spin-orbit coupled potential energy surfaces are employed to incorporate the vibrational-to-electronic energy transfer mechanism involving the O(2)(a (1)Delta(g)) and O(2)(b (1)Sigma(g) (+)) excited states. The transition probabilities obtained show a sharp increase for v>/=26 providing the first direct evidence of the important role played by the electronic energy transfer processes in the depletion of O(2)(X (3)Sigma(g) (-),v>/=26).