title: Dynamics of the S(1D2)+HD(j=0) reaction at collision energies approaching the cold regime: a stringent test for theory.
abstract: We report integral cross sections for the S(1D2)+HD(j=0)→DS+H and HS+D reaction channels obtained through crossed-beam experiments reaching collision energies as low as 0.46 meV and from adiabatic time-independent quantum-mechanical calculations. While good overall agreement with experiment at energies above 10 meV is observed, neither the product channel branching ratio nor the low-energy resonancelike features in the HS+D channel can be theoretically reproduced. A nonadiabatic treatment employing highly accurate singlet and triplet potential energy surfaces is clearly needed to resolve the complex nature of the reaction dynamics.
authors.affiliation: Departamento de Química Física Aplicada, Facultad de Ciencias, Universidad Autónoma de Madrid, 28049 Madrid, Spain.
authors.forename: Manuel
authors.initials: M
authors.lastname: Lara
authors.forename: Simon
authors.initials: S
authors.lastname: Chefdeville
authors.forename: Kevin M
authors.initials: KM
authors.lastname: Hickson
authors.forename: Astrid
authors.initials: A
authors.lastname: Bergeat
authors.forename: Christian
authors.initials: C
authors.lastname: Naulin
authors.forename: Jean-Michel
authors.initials: JM
authors.lastname: Launay
authors.forename: Michel
authors.initials: M
authors.lastname: Costes