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Title: Surface-induced dissociation of methanol cations: A non-ergodic process

Here, dissociation of methanol molecular cations, CH 3OH +, to CH 2OH + 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.
  1. Pacific Northwest National Lab. (PNNL), Richland, WA (United States). Earth and Biological Sciences Directorate
Publication Date:
Report Number(s):
Journal ID: ISSN 1387-3806; PII: S1387380617303305
Grant/Contract Number:
Accepted Manuscript
Journal Name:
International Journal of Mass Spectrometry
Additional Journal Information:
Journal Volume: 422; Journal ID: ISSN 1387-3806
Research Org:
Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
Sponsoring Org:
USDOE Office of Science (SC), Biological and Environmental Research (BER) (SC-23)
Country of Publication:
United States
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; Surface-Induced Dissociation; Methanol Cations; Dissociation Dynamics; Non-Ergodic Process; Scattering of fragment ions; Newton Diagram
OSTI Identifier: