High-temperature guided-ion beam measurements were performed to examine the role of low-frequency acetylene bending modes in low energy charge-transfer collisions. A variable temperature-selected ion drift tube apparatus was used to measure thermal energy rate coefficients. The translational energy dependence of the charge-transfer cross sections in three differnt energy regions was also described. It was found that the charge-transfer cross sections decreased up to 0.5 eV, remained constant between 0.5 eV and 1.5 eV, and increased dramatically above 1.7 eV. The results indicated that the charge-transfer reactions occurred through nonadiabatic transitions between quartet and doublet states.
ASJC Scopus subject areas
- Physics and Astronomy(all)
- Physical and Theoretical Chemistry