Angle-resolved velocity distributions of excited Rh atoms ejected from ion-bombarded Rh{100}

Dan N. Bernardo, Mohamed El-Maazawi, Roya Maboudian, Zbigniew Postawa, Nicholas Winograd, Barbara J. Garrison

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24 Scopus citations


The distributions of metastable excited state (4F7/2) and ground state (4F9/2) Rh atoms ejected from Ar +-bombarded Rh{100} are experimentally determined as a function of ejection velocity and angle. Corresponding theoretical predictions are made by incorporating a nonradiative deexcitation model into molecular dynamics simulations of the bombardment process. There is good agreement between the experimental and theoretical distributions. The simulations show that a fraction of the ejected atoms are excited via collisions 1-20 Å above the surface, and that these atoms make a significant contribution to the excited atom yield at low ejection velocities.

Original languageEnglish (US)
Pages (from-to)3846-3854
Number of pages9
JournalThe Journal of chemical physics
Issue number5
StatePublished - 1992

All Science Journal Classification (ASJC) codes

  • General Physics and Astronomy
  • Physical and Theoretical Chemistry


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