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Dissociative recombination of ammonia clusters studied by storage ring experiments
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2006 (English)In: Journal of Chemical Physics, ISSN 0021-9606, E-ISSN 1089-7690, Vol. 125, no 19, 194306- p.Article in journal (Refereed) Published
Abstract [en]

Dissociative recombination of ammonia cluster ions with free electrons has been studied at the heavy-ion storage ring CRYRING (Manne Siegbahn Laboratory, Stockholm University). The absolute cross sections for dissociative recombination of H+(NH3)(2), H+(NH3)(3), D+(ND3)(2), and D+(ND3)(3) in the collision energy range of 0.001-27 eV are reported, and thermal rate coefficients for the temperature interval from 10 to 1000 K are calculated from the experimental data and compared with earlier results. The fragmentation patterns for the two ions H+(NH3)(2) and D+(ND3)(2) show no clear isotope effect. Dissociative recombination of X+(NX3)(2) (X=H or D) is dominated by the product channels 2NX(3)+X [0.95 +/- 0.02 for H+(NH3)(2) and 1.00 +/- 0.02 for D+(ND3)(2)]. Dissociative recombination of D+(ND3)(3) is dominated by the channels yielding three N-containing fragments (0.95 +/- 0.05).

Place, publisher, year, edition, pages
2006. Vol. 125, no 19, 194306- p.
Keyword [en]
ELECTRON-TEMPERATURE DEPENDENCE, ABSOLUTE CROSS-SECTIONS, ION RECOMBINATION, DIELECTRONIC RECOMBINATION, BRANCHING RATIOS, EXCITATION, NH4, BEAM, NO
National Category
Physical Chemistry
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URN: urn:nbn:se:kth:diva-37716DOI: 10.1063/1.2387174ISI: 000242181800022Scopus ID: 2-s2.0-33845317640OAI: oai:DiVA.org:kth-37716DiVA: diva2:435177
Note
QC 20110817Available from: 2011-08-17 Created: 2011-08-16 Last updated: 2017-12-08Bibliographically approved

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CiteExportLink to record
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