Visible photodissociation processes of (CO2)2 + studied by ion imaging experiments and reaction dynamics simulations

摘要

Visible photodissociation processes of carbon dioxide dimer cation, (CO2)2 + , were previously studied by Bowers et al [1]. They measured velocity distribution of photofragment CO2 + ions and found that the distribution consisted of two components. They predicted that the faster component originated from direct dissociation in a repulsive electronic excited state, while the slower one from statistical dissociation. However, the detail of the statistical process is not well understood so far. In this study, the photodissociation processes of (CO2)2 + have been revisited by ion imaging experiments, calculations of potential energy surfaces (PESs), and molecular dynamics (MD) simulations [2].