Electron-impact dissociation of XH2+ (X = B, C, N, O, F): Absolute cross sections for production of XH+ and X+ fragment ions
2010 (English)In: Physical Review A. Atomic, Molecular, and Optical Physics, ISSN 1050-2947, E-ISSN 1094-1622, Vol. 82, no 4, 042720- p.Article in journal (Refereed) Published
Absolute cross sections for electron-impact dissociation of XH2+ (X = B, C, N, O, F) producing XH+ and X+ ion fragments were measured in the 3- to 100-eV range using a crossed-electron-ion beams technique. Dissociative excitation of BD2+ and CH2+ producing B+ and C+, respectively, show a propensity toward a two-body dissociation while the remaining species all tend to show a three-body dissociation dynamic. The BD+ and CH+ dissociative excitation channels show a large resonant-type contribution to the cross sections at similar to 10eV. For the X+ fragment ion production cross sections, a clear dependence on the threshold energy, as it relates to the rate of rise in the cross section above threshold, is observed.
Place, publisher, year, edition, pages
2010. Vol. 82, no 4, 042720- p.
IdentifiersURN: urn:nbn:se:su:diva-51453DOI: 10.1103/PhysRevA.82.042720ISI: 000283486500010OAI: oai:DiVA.org:su-51453DiVA: diva2:385286
authorCount :72011-01-112011-01-102011-01-11Bibliographically approved