Surface Crossing Model for Ionhyphen;Molecule Reactions

摘要

The effect of surface crossings on ionhyphen;molecule reactions is investigated. A model is proposed to locate these crossings and determine their effect on reactive cross sections. The model successfully explains why some ionhyphen;molecule reactions have cross sections larger than the Langevin value. It also explains why the two spinhyphen;orbit states of Arplus;have different cross sections for reaction with H2.