Journal
JOURNAL OF CHEMICAL PHYSICS
Volume 124, Issue 9, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.2177664
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Dynamical calculations are presented for electronically nonadiabatic vibrational deexcitation of H-2 and D-2 in scattering from Cu(111). Both the potential energy surface and the nonadiabatic coupling strength were obtained from density functional calculations. The theoretically predicted magnitude of the deexcitation and its dependence on incident energy and isotope are all in agreement with state-to-state scattering experiments [on Cu(100)], and this gives indirect evidence for a nonadiabatic mechanism of the observed deexcitation. Direct evidence could be obtained by measuring the chemicurrent associated with the deexcitation, and its properties have been predicted. (c) 2006 American Institute of Physics.
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