Focused scattering of low energy Li+ from Mo(001): Experimental and computer simulation results

S. H. Overbury; P. C. Stair; P. A. Agron

doi:10.1016/0039-6028(83)90573-3

Focused scattering of low energy Li⁺ from Mo(001): Experimental and computer simulation results

S. H. Overbury, P. C. Stair, P. A. Agron

Northwestern University

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18 Citations (Scopus)

Abstract

The azimuthal dependence of the energy distribution of Li⁺, specularly scattered from Mo(001), has been obtained for several incident energies E_i. The energy distributions exhibit one or two peaks, which always lie below the kinematical single scattering energy and which have intensity and energy that depend upon the azimuth. Due to trajectory focusing, the intensity is strongly peaked along the [100] azimuth for E_i ≲ 500 eV, but at higher E_i the intensity enhancement is shifted toward the [310] azimuth. Results of computer simulation give reasonable agreement with experimental observations. Analysis of the simulated trajectories allows identification of the scattering mechanisms which contribute to each portion of the spectrum.

Original language	English
Pages (from-to)	377-395
Number of pages	19
Journal	Surface Science
Volume	125
Issue number	2
DOIs	https://doi.org/10.1016/0039-6028(83)90573-3
Publication status	Published - Feb 2 1983

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ASJC Scopus subject areas

Physical and Theoretical Chemistry
Condensed Matter Physics
Surfaces and Interfaces

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Overbury, S. H., Stair, P. C., & Agron, P. A. (1983). Focused scattering of low energy Li⁺ from Mo(001): Experimental and computer simulation results. Surface Science, 125(2), 377-395. https://doi.org/10.1016/0039-6028(83)90573-3

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N2 - The azimuthal dependence of the energy distribution of Li+, specularly scattered from Mo(001), has been obtained for several incident energies Ei. The energy distributions exhibit one or two peaks, which always lie below the kinematical single scattering energy and which have intensity and energy that depend upon the azimuth. Due to trajectory focusing, the intensity is strongly peaked along the [100] azimuth for Ei ≲ 500 eV, but at higher Ei the intensity enhancement is shifted toward the [310] azimuth. Results of computer simulation give reasonable agreement with experimental observations. Analysis of the simulated trajectories allows identification of the scattering mechanisms which contribute to each portion of the spectrum.

AB - The azimuthal dependence of the energy distribution of Li+, specularly scattered from Mo(001), has been obtained for several incident energies Ei. The energy distributions exhibit one or two peaks, which always lie below the kinematical single scattering energy and which have intensity and energy that depend upon the azimuth. Due to trajectory focusing, the intensity is strongly peaked along the [100] azimuth for Ei ≲ 500 eV, but at higher Ei the intensity enhancement is shifted toward the [310] azimuth. Results of computer simulation give reasonable agreement with experimental observations. Analysis of the simulated trajectories allows identification of the scattering mechanisms which contribute to each portion of the spectrum.

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10.1016/0039-6028(83)90573-3