Helium atom scattering from isolated CO molecules on copper(001)
Graham, A. P. ; Hofmann, F. ; Toennies, J. P. ; Manson, J. R.
College Park, Md. : American Institute of Physics (AIP)
Published 1996
College Park, Md. : American Institute of Physics (AIP)
Published 1996
| ISSN: |
1089-7690
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|---|---|
| Source: |
AIP Digital Archive
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| Topics: |
Physics
Chemistry and Pharmacology
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| Notes: |
Angular distributions have been measured for helium atoms scattering from isolated CO molecules chemisorbed on a Cu(001) surface as a function of incident beam energy between 9.4 and 100 meV and surface coverage from 1.3% ML to 9.3% ML. Up to five oscillations are clearly observed in the angular distributions. The parallel wave vector transfers of the peaks vary only slightly with incident energy and are independent of coverage up to 20% of a c(2×2) layer. New hard wall scattering calculations show that all of the distinct peaks observed can be explained by interference structures involving both Fraunhofer diffraction and illuminated face scattering from CO molecules with an approximate hard wall radius of 2.4 A(ring) with no evidence of the classical rainbows predicted in several recent theoretical studies. © 1996 American Institute of Physics.
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| Type of Medium: |
Electronic Resource
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| URL: |