Surface-induced dissociation of methanol cations: A non-ergodic process
- Pacific Northwest National Lab. (PNNL), Richland, WA (United States). Earth and Biological Sciences Directorate
Here, dissociation of methanol molecular cations, CH3OH+, to CH2OH+ on collision with a self-assembled monolayer surface of fluorinated alkyl thiol on gold 111 crystal has been studied at 12.5 eV collision energy. Two energetically and spatially distinct processes contribute to the dissociation process: one involving loss of very large amount of energy approaching the initial kinetic energy of the primary ions with scattering of fragment ions over a broad angular range between surface normal and surface parallel while the second process results from small amount of energy loss with fragment ions scattered over a narrow angular range close to the surface parallel. There is a third process with relatively small contribution to total dissociation whose characteristics are very similar to the low energy loss process. Finally, these results demonstrate that surface-induced dissociation of methanol cations via hydrogen loss is non-ergodic.
- Research Organization:
- Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Biological and Environmental Research (BER)
- Grant/Contract Number:
- AC05-76RL01830; AC05-76RLO-1830
- OSTI ID:
- 1379955
- Alternate ID(s):
- OSTI ID: 1549920
- Report Number(s):
- PNNL-SA-126841; PII: S1387380617303305
- Journal Information:
- International Journal of Mass Spectrometry, Vol. 422; ISSN 1387-3806
- Publisher:
- ElsevierCopyright Statement
- Country of Publication:
- United States
- Language:
- English
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