Experimental studies on the dissociative recombination of H13CO+ with electrons at energies between 2 – 50 000 meV
(English)Manuscript (preprint) (Other academic)
Determination of dissociative recombination processes of H13CO+ using merged ion-electron beam methods has been performed at the heavy storage ring CRYRING, Stockholm, Sweden. We have measured the branching fractions at ~0 eV as: CO+H 87±2%, OH+C 9±2% and O+CH 4±2%. The channels leading to CO+H have the following branching fractions between the accessible electronic states of CO(X1S+)+H 46±3%, CO(a3Pg)+H 20±1% and CO(a’3S+)+H 34±3% respectively. The reaction cross section was fitted between 1-300 meV and followed the expression σ = 1.2±0.25×10-16 E-1.32±0.02 cm2 and the corresponding thermal rate constant was determined to k(T) = 2.0±0.4×10−7(T/300)−0.82±0.02 cm3s−1. The cross sections between ~2-50 000 meV were investigated showing resonant structures between 3-15 eV.
H13CO+, HCO+, Dissociative recombination, Cross section, Branching fraction, Imaging, Storage ring, CRYRING
Atom and Molecular Physics and Optics
Research subject Chemical Physics
IdentifiersURN: urn:nbn:se:su:diva-38760OAI: oai:DiVA.org:su-38760DiVA: diva2:314598