Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Dissociative recombination of protonated methanol
Stockholm University, Faculty of Science, Department of Physics. (Molekylfysik)
Stockholm University, Faculty of Science, Department of Physics. (Molekylfysik)
Stockholm University, Faculty of Science, Department of Physics. (Molekylfysik)
Stockholm University, Faculty of Science, Department of Physics. (Molekylfysik)
Show others and affiliations
2006 (English)In: Faraday discussions (Online), ISSN 1364-5498, E-ISSN 1359-6640, Vol. 133, 177-190 p.Article in journal (Refereed) Published
Abstract [en]

The branching ratios of the different reaction pathways and the overall rate coefficients of the dissociative recombination reactions of CH3OH2+ and CD3OD2+ have been measured at the CRYRING storage ring located in Stockholm, Sweden. Analysis of the data yielded the result that formation of methanol or deuterated methanol accounted for only 3 and 6% of the total rate in CH3OH2+ and CD3OD2+, respectively. Dissociative recombination of both isotopomeres mainly involves fragmentation of the C–O bond, the major process being the three-body break-up forming CH3, OH and H (CD3, OD and D). The overall cross sections are best fitted by s = 1.2 ± 0.1 × 10-15 E-1.15±0.02 cm2 and s = 9.6 ± 0.9 × 10-16 E-1.20±0.02 cm2 for CH3OH2+ and CD3OD2+, respectively. From these values thermal reaction rate coefficients of k(T) = 8.9 ± 0.9 ×10-7 (T/300)-0.59±0.02 cm3 s-1 (CH3OH2+) and k(T) = 9.1 ± 0.9 × 10-7 (T/300)-0.63±0.02 cm3 s-1(CD3OD2+) can be calculated. A non-negligible formation of interstellar methanol by the previously proposed mechanism via radiative association of CH3+ and H2O and subsequent dissociative recombination of the resulting CH3OH2+ ion to yield methanol and hydrogen atoms is therefore very unlikely.

Place, publisher, year, edition, pages
Cambridge: Royal Society of Chemistry , 2006. Vol. 133, 177-190 p.
National Category
Atom and Molecular Physics and Optics
Research subject
Chemical Physics
Identifiers
URN: urn:nbn:se:su:diva-38761OAI: oai:DiVA.org:su-38761DiVA: diva2:314600
Available from: 2011-02-18 Created: 2010-04-27 Last updated: 2011-02-18Bibliographically approved

Open Access in DiVA

fulltext(640 kB)265 downloads
File information
File name FULLTEXT01.pdfFile size 640 kBChecksum SHA-512
8c21a433c8dd4050b97215ef72ff6a7a82a9cf1d4af652e857c1720cb4bf84c43d9546cf1a3307a4d1948b9616c00ae4e0f249a2e63da91f7402cb5203c0c49d
Type fulltextMimetype application/pdf

Search in DiVA

By author/editor
Geppert, Wolf
By organisation
Department of PhysicsThe Manne Siegbahn Laboratory
In the same journal
Faraday discussions (Online)
Atom and Molecular Physics and Optics

Search outside of DiVA

GoogleGoogle Scholar
Total: 265 downloads
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

urn-nbn

Altmetric score

urn-nbn
Total: 88 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf