title: Electron energy-dependent product state distributions in the dissociative recombination of O2+.
abstract: We present product state distributions and quantum yields from the dissociative recombination reaction of O2+ in its electronic and vibrational ground states as a function of electron collision energy between 0 and 300 meV. The experiments have been performed in the heavy-ion storage ring, CRYRING, and use a cold hollow-cathode discharge source for the production of cold molecular oxygen ions. The branching fractions over the different dissociation limits show distinct oscillations while the resulting product quantum yields are largely independent of electron collision energy above 40 meV. The branching results are well reproduced assuming an isotropic dissociation process, in contrast with recent theoretical predictions.
authors: FOM Institute for Atomic and Molecular Physics, Kruislaan 407, 1098 SJ, Amsterdam, The Netherlands. annemieke@petrignani.nl
authors: Annemieke
authors: A
authors: Petrignani
authors: Fredrik
authors: F
authors: Hellberg
authors: Richard D
authors: RD
authors: Thomas
authors: Mats
authors: M
authors: Larsson
authors: Philip C
authors: PC
authors: Cosby
authors: Wim J
authors: WJ
authors: van der Zande