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

Shukla, Anil K.

doi:10.1016/J.IJMS.2017.08.019

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

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Abstract

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.

Authors:

Shukla, Anil K. ^[1]

Pacific Northwest National Lab. (PNNL), Richland, WA (United States). Earth and Biological Sciences Directorate

Publication Date:: Fri Sep 01 00:00:00 EDT 2017

Research Org.:: Pacific Northwest National Lab. (PNNL), Richland, WA (United States)

Sponsoring Org.:: USDOE Office of Science (SC), Biological and Environmental Research (BER)

OSTI Identifier:: 1379955

Alternate Identifier(s):: OSTI ID: 1549920

Report Number(s):: PNNL-SA-126841
Journal ID: ISSN 1387-3806; PII: S1387380617303305

Grant/Contract Number:: AC05-76RL01830; AC05-76RLO-1830

Resource Type:: Accepted Manuscript

Journal Name:: International Journal of Mass Spectrometry

Additional Journal Information:: Journal Volume: 422; Journal ID: ISSN 1387-3806

Publisher:: Elsevier

Country of Publication:: United States

Language:: English

Subject:: 37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; Surface-Induced Dissociation; Methanol Cations; Dissociation Dynamics; Non-Ergodic Process; Scattering of fragment ions; Newton Diagram

Citation Formats


                    Shukla, Anil K. Surface-induced dissociation of methanol cations: A non-ergodic process.  United States: N. p., 2017. 
Web.  doi:10.1016/J.IJMS.2017.08.019.

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                    Shukla, Anil K. Surface-induced dissociation of methanol cations: A non-ergodic process.  United States.  https://doi.org/10.1016/J.IJMS.2017.08.019

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                    Shukla, Anil K. Fri .  
"Surface-induced dissociation of methanol cations: A non-ergodic process".  United States.  https://doi.org/10.1016/J.IJMS.2017.08.019.  https://www.osti.gov/servlets/purl/1379955.

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@article{osti_1379955,

  title        = {Surface-induced dissociation of methanol cations: A non-ergodic process},

  author       = {Shukla, Anil K.},

  abstractNote = {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.},

  doi          = {10.1016/J.IJMS.2017.08.019},

  journal      = {International Journal of Mass Spectrometry},

  number       = ,

  volume       = 422,

  place        = {United States},

  year         = {Fri Sep 01 00:00:00 EDT 2017},

  month        = {Fri Sep 01 00:00:00 EDT 2017}

}

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