An electron-stimulated desorption ion angular distribution and low-energy electron diffraction investigation of CF3I on Ru(001)

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dc.contributor.author Jensen, M.
dc.contributor.author Dyer, J.
dc.contributor.author Thiel, Patricia
dc.contributor.author Leung, W.-Y.
dc.contributor.author Thiel, Patricia
dc.contributor.department Chemistry
dc.date 2018-02-16T16:23:54.000
dc.date.accessioned 2020-06-30T01:24:17Z
dc.date.available 2020-06-30T01:24:17Z
dc.date.copyright Mon Jan 01 00:00:00 UTC 1996
dc.date.issued 1996
dc.description.abstract <p>We have investigated the structures of CF3I, and its dissociation products, adsorbed on Ru(001) using low-energy electron diffraction and electron-stimulated desorption ion angular distribution (ESDIAD). Atomic iodine forms (√3x√3)R30° islands even at very low coverages. At 70% of saturation and above, a (2X2) superstructure forms which we attribute to a p(2X2) unit cell with one CF<sub>3</sub> group and one iodine atom. ESDIAD images show F+ desorbing at normal emission and in three hexagonal patterns. The normal emission is attributed to a tilted configuration of CF<sub>3</sub>(ad) in which one C-F bond is oriented perpendicular to the surface. A small hexagon is attributed to F(ad) on step edges. A large hexagon at low coverages may arise from isolated CF<sub>3</sub>(ad) species possessing C<sub>3v</sub> symmetry. And finally, an intermediate hexagon is attributed to perturbation of the CF<sub>3</sub>(ad) orientation by molecular fragments which result from electron irradiation of physisorbed CF<sub>3</sub>I.</p>
dc.description.comments <p>Reprinted (adapted) with permission from <em>Langmuir</em> 12 (1996): 3472, doi: <a href="http://dx.doi.org/10.1021/la950211v" target="_blank">10.1021/la950211v</a>. Copyright 1996 American Chemical Society..</p>
dc.format.mimetype application/pdf
dc.identifier archive/lib.dr.iastate.edu/chem_pubs/97/
dc.identifier.articleid 1096
dc.identifier.contextkey 7282497
dc.identifier.s3bucket isulib-bepress-aws-west
dc.identifier.submissionpath chem_pubs/97
dc.identifier.uri https://dr.lib.iastate.edu/handle/20.500.12876/15471
dc.language.iso en
dc.source.bitstream archive/lib.dr.iastate.edu/chem_pubs/97/0-1996_ThielPA_ElectronStimulatedDesorption.pdf|||Sat Jan 15 02:36:29 UTC 2022
dc.source.bitstream archive/lib.dr.iastate.edu/chem_pubs/97/1996_ThielPA_ElectronStimulatedDesorption.pdf|||Sat Jan 15 02:36:30 UTC 2022
dc.source.uri 10.1021/la950211v
dc.subject.disciplines Chemistry
dc.subject.disciplines Materials Chemistry
dc.subject.keywords adsorption
dc.subject.keywords electron diffraction
dc.subject.keywords molecular structure
dc.subject.keywords Electron stimulated desorption ion angular distribution (ESDIAD)
dc.subject.keywords low energy electron diffraction
dc.subject.keywords orientation
dc.subject.keywords Ames Laboratory
dc.title An electron-stimulated desorption ion angular distribution and low-energy electron diffraction investigation of CF3I on Ru(001)
dc.type article
dc.type.genre article
dspace.entity.type Publication
relation.isAuthorOfPublication 5e15742e-5866-486b-999c-75a0a6b554e4
relation.isOrgUnitOfPublication 42864f6e-7a3d-4be3-8b5a-0ae3c3830a11
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