title: A theoretical analysis of time-dependent fragment momenta in indirect photofragmentation.
abstract: We study theoretically diatomic molecules which are prepared in a superposition of quasibound resonance states by a femtosecond laser pulse. An analytical (Landau-Zener-like) result is derived for the momentum distribution of the atomic fragments in the asymptotic force-free region after a single passage of a curve crossing. Furthermore, at later times, simple analytical expressions show how the emerging structures in the momentum distribution are related to the energies of the resonance states.
authors.affiliation: Department of Chemistry, CMM, Technical University of Denmark, Building 207, DK-2800 Kgs. Lyngby, Denmark. neh@kemi.dtu.dk
authors.forename: Niels E
authors.initials: NE
authors.lastname: Henriksen