title: Nonadiabatic dynamics in the CH3+HCl-->CH4+Cl(2PJ) reaction.
abstract: Nonadiabatic dynamics in the title reaction have been investigated by 2+1 REMPI detection of the Cl(2P(3/2)) and Cl*(2P(1/2)) products. Reaction was initiated by photodissociation of CH(3)I at 266 nm within a single expansion of a dilute mixture of CH(3)I and HCl in argon, giving a mean collision energy of 7800 cm(-1) in the center-of-mass frame. Significant production of Cl* was observed, with careful checks made to ensure that no additional photochemical or inelastic scattering sources of Cl* perturbed the measurements. The fraction of the total yield of Cl(2P(J)) atoms formed in the J=1/2 level at this collision energy was 0.150+/-0.024, and must arise from nonadiabatic dynamics because the ground potential energy surface correlates to CH(4)+Cl(2P(3/2)) products.
authors.affiliation: School of Chemistry, University of Bristol, Cantock's Close, Bristol BS8 1TS, United Kingdom.
authors.forename: Bertrand
authors.initials: B
authors.lastname: Retail
authors.forename: Julie K
authors.initials: JK
authors.lastname: Pearce
authors.forename: Craig
authors.initials: C
authors.lastname: Murray
authors.forename: Andrew J
authors.initials: AJ
authors.lastname: Orr-Ewing