title: Quantum state-to-state rate constants for the rotationally inelastic collision of CH(B2Sigma(-), nu=0, N-->N') with Ar.
abstract: We have calculated the state-to-state integral cross sections and rate constants for the rotationally inelastic collision of CH(B (2)Sigma(-), nu=0, N-->N') with Ar using the quantum coupled-state and close-coupling methods on an ab initio potential-energy surface constructed by Alexander et al. [J. Chem. Phys. 101, 4547 (1994)]. Overall the calculated rate constants are in good agreements with the three available experimental results. The rate constants are comparable to the usual gas kinetic and decrease with increasing N and DeltaN. For the multiquantum transition cases, the theory underestimates the experiment. We discuss some possible causes to the discrepancies among the theory and the experiments.
authors.affiliation: Institute of Applied Mechanics, National Taiwan University, Taipei 106, Taiwan, Republic of China. sdchao@spring.iam.ntu.edu.tw
authors.forename: Sheng Der
authors.initials: SD
authors.lastname: Chao
authors.forename: Sheng Hsien
authors.initials: SH
authors.lastname: Lin
authors.forename: Millard H
authors.initials: MH
authors.lastname: Alexander