ELECTRON AND PHOTON-STIMULATED DESORPTION FROM PHYSISORBED CO FILMS
We have investigated photon stimulated desorption (PSD) and electron stimulated desorption (ESD) from CO films physisorbed on graphite and Pt(1 1 1) at monolayer coverages, with photon and electron energies in the range 13-35 and 0-70 eV, respectively. The C + ion yields in P...
| Main Authors: | , , , , , |
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| Format: | Conference item |
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1995
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| _version_ | 1797093663499616256 |
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| author | Siller, L Laitenberger, P Palmer, R Bennett, S Foord, J Macdonald, M |
| author_facet | Siller, L Laitenberger, P Palmer, R Bennett, S Foord, J Macdonald, M |
| author_sort | Siller, L |
| collection | OXFORD |
| description | We have investigated photon stimulated desorption (PSD) and electron stimulated desorption (ESD) from CO films physisorbed on graphite and Pt(1 1 1) at monolayer coverages, with photon and electron energies in the range 13-35 and 0-70 eV, respectively. The C + ion yields in PSD from the two substrates show remarkable similarities. Therefore, we conclude that the CO dissociation proceeds mainly via direct molecular excitation processes. In ESD from CO/graphite the energy dependences of the C -, O -, C + and O + signals exhibit a variety of distinct thresholds and enable us to identify the desorption processes involved. A comparison of the PSD and ESD results provides further evidence for the direct nature of the desorption process in this model system. © 1995. |
| first_indexed | 2024-03-07T04:03:32Z |
| format | Conference item |
| id | oxford-uuid:c5643a93-5156-4d55-b546-ab68aeec7130 |
| institution | University of Oxford |
| last_indexed | 2024-03-07T04:03:32Z |
| publishDate | 1995 |
| record_format | dspace |
| spelling | oxford-uuid:c5643a93-5156-4d55-b546-ab68aeec71302022-03-27T06:30:28ZELECTRON AND PHOTON-STIMULATED DESORPTION FROM PHYSISORBED CO FILMSConference itemhttp://purl.org/coar/resource_type/c_5794uuid:c5643a93-5156-4d55-b546-ab68aeec7130Symplectic Elements at Oxford1995Siller, LLaitenberger, PPalmer, RBennett, SFoord, JMacdonald, MWe have investigated photon stimulated desorption (PSD) and electron stimulated desorption (ESD) from CO films physisorbed on graphite and Pt(1 1 1) at monolayer coverages, with photon and electron energies in the range 13-35 and 0-70 eV, respectively. The C + ion yields in PSD from the two substrates show remarkable similarities. Therefore, we conclude that the CO dissociation proceeds mainly via direct molecular excitation processes. In ESD from CO/graphite the energy dependences of the C -, O -, C + and O + signals exhibit a variety of distinct thresholds and enable us to identify the desorption processes involved. A comparison of the PSD and ESD results provides further evidence for the direct nature of the desorption process in this model system. © 1995. |
| spellingShingle | Siller, L Laitenberger, P Palmer, R Bennett, S Foord, J Macdonald, M ELECTRON AND PHOTON-STIMULATED DESORPTION FROM PHYSISORBED CO FILMS |
| title | ELECTRON AND PHOTON-STIMULATED DESORPTION FROM PHYSISORBED CO FILMS |
| title_full | ELECTRON AND PHOTON-STIMULATED DESORPTION FROM PHYSISORBED CO FILMS |
| title_fullStr | ELECTRON AND PHOTON-STIMULATED DESORPTION FROM PHYSISORBED CO FILMS |
| title_full_unstemmed | ELECTRON AND PHOTON-STIMULATED DESORPTION FROM PHYSISORBED CO FILMS |
| title_short | ELECTRON AND PHOTON-STIMULATED DESORPTION FROM PHYSISORBED CO FILMS |
| title_sort | electron and photon stimulated desorption from physisorbed co films |
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