title: Fully differential molecular-frame measurements for the electron-impact dissociative ionization of H2.
abstract: We present fully differential state-resolved experimental data for the dissociative ionization of molecular hydrogen induced through electron impact. Molecular-frame ionization cross sections are derived for transitions from the X{1}Sigma{g}{+} molecular ground state to the 1ssigma{g}, 2psigma{u}, 2ssigma{g}, and 2ppi{u} states of H2+. For transitions to the 2ssigma{g} and 2ppi{u} states, a strong orientation dependence in the cross sections is revealed, with "side-on" preferred to "end-on" collisions and a propensity for the fragment proton to emerge along the normal to the scattering plane.
authors.affiliation: AMPL, Research School of Physics and Engineering, Australian National University, Canberra, ACT 0200, Australia.
authors.forename: S
authors.initials: S
authors.lastname: Bellm
authors.forename: J
authors.initials: J
authors.lastname: Lower
authors.forename: E
authors.initials: E
authors.lastname: Weigold
authors.forename: D W
authors.initials: DW
authors.lastname: Mueller