Computationally Simple Model for Multiphoton-Induced Chemical Processes

Article abstract of DOI:10.1021/j100213a028

A model for the multiphoton-induced decomposition of large polyatomic molecules that includes the effects of collisional deactivation is presented.Having only two adjustable parameters, the new model allows the time integral of the population of reactive energy states following the laser pulse to be computed very easily.The model is intended to describe experiments in which the bulk of reaction takes place after the laser pulse.It is particularly useful for describing decomposition through several competing reaction pathways.The model is applied to literature data on cyclobutanone.Very good agreement is obtained for the pressure dependence of the product ratio between the two decomposition channels and for the variation of the total decomposition with pressure for pressures less than about 0.6 torr.Reasons for the failure of the model at higher pressures are discussed.