title: Reaction dynamics of temperature-variable anion water clusters studied with crossed beams and by direct dynamics.
abstract: We present a study of the different product channels in the reactions of OH and OH-(H2O) with methyl iodide over a range of collision energies. Direct dynamics classical trajectory simulations are employed to obtain an atomistic comparison with the experimental results. For the experiments we have combined a crossed beam ion imaging setup with a multipole rf ion trap. The trap allows us to prepare the molecular and cluster ions with a controlled internal temperature and thus provides well-defined initial conditions for reaction experiments at low collision energy. Changing the internal temperature of the cluster ions was found to have a profound effect on their reactivity.
authors.affiliation: Institut für Lonenphysik und Angewandte Physik, Universität Innsbruck, Technikerstrase 25, A-6020 Innsbruck, Austria.
authors.forename: R
authors.initials: R
authors.lastname: Otto
authors.forename: J
authors.initials: J
authors.lastname: Xie
authors.forename: J
authors.initials: J
authors.lastname: Brox
authors.forename: S
authors.initials: S
authors.lastname: Trippel
authors.forename: M
authors.initials: M
authors.lastname: Stei
authors.forename: T
authors.initials: T
authors.lastname: Best
authors.forename: M R
authors.initials: MR
authors.lastname: Siebert
authors.forename: W L
authors.initials: WL
authors.lastname: Hase
authors.forename: R
authors.initials: R
authors.lastname: Wester