Nagano, Seido and Luo, Zi-Ping and Metiu, Horia and Huo, Winifred M. and Lima, Marco A. P. and McKoy, Vincent (1986) On the possibility of using differential cross section measurements for the electronic excitation of adsorbates by an electron beam, to determine the adsorbate orientation. Journal of Chemical Physics, 85 (10). pp. 6153-6162. ISSN 0021-9606 http://resolver.caltech.edu/CaltechAUTHORS:NAGjcp86
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We show, by detailed electron–molecule scattering calculations, that the angular dependence of electron energy loss spectra in which an adsorbate is electronically excited can be used to identify the orientation of the molecule with respect to the surface and the nature of the final states. The calculations are exploratory and were carried out for an H2 molecule. The transition amplitude for electron–molecule scattering is calculated by using the Schwinger variational principle with two open channels. The effects of the surface were introduced through a semiquantitative model which treats the surface as a partly reflecting, flat mirror.
|Additional Information:||Copyright © 1986 American Institute of Physics. Received 9 June 1986; accepted 8 August 1986. This work was supported by ARO and AFOSR through Contract DAA G29-85-K-0117. Arthur Amos Noyes Laboratory of Chemical Physics, Contribution 7431.|
|Subject Keywords:||ELECTRON−MOLECULE COLLISIONS, ADSORPTION, HYDROGEN, SURFACES, SORPTIVE PROPERTIES, ORIENTATION, DIFFERENTIAL CROSS SECTIONS, EXCITATION, ELECTRON BEAMS|
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|Deposited On:||21 Oct 2008 05:01|
|Last Modified:||26 Dec 2012 10:25|
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