The cross-section and branching fractions for dissociative recombination of the diacetylene cation C4D2+
2008 (English)In: International Journal of Mass Spectrometry, ISSN 1387-3806, Vol. 273, no 3, 111-116 p.Article in journal (Refereed) Published
In this paper we report the results of a study on the dissociative recombination (DR) of the diacetylene cation, C4D2+, which has been carried out at the ion storage ring CRYRING in Stockholm, Sweden. The energy-dependent absolute DR cross-section as well as the branching fractions at 0 eV collision energy were measured. The DR cross-section was best fitted using the expression σ(E) = (7.5 ± 1.5) × 10−16 × E−(1.29±0.03) cm2 over the collision energy range 1–100 meV. The thermal rate coefficient was deduced from the cross-section to be α(T) = (1.10 ± 0.15) × 10−6 × (T/300)−(0.79±0.03) cm3/s. The reported branching fractions for C4D2+ agree with previous experiments on the DR of C4H2+ performed at the ASTRID storage ring in Aarhus, Denmark, and furthermore, indicate that the DR of C4D2+ possesses only two channels leading to the following products: C4D + D (75%) and C2D + C2D (25%).
Place, publisher, year, edition, pages
2008. Vol. 273, no 3, 111-116 p.
Diacetylene cation, Dissociative recombination, Branching fraction, Cross-section
IdentifiersURN: urn:nbn:se:su:diva-24787DOI: 10.1016/j.ijms.2008.03.009ISI: 000256772900004OAI: oai:DiVA.org:su-24787DiVA: diva2:198311