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Nonadiabatic pathways in the dissociative adsorption of simple molecules
Author(s) -
Hasselbrink Eckart
Publication year - 2005
Publication title -
israel journal of chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.908
H-Index - 54
eISSN - 1869-5868
pISSN - 0021-2148
DOI - 10.1560/yqkh-dtxv-7m69-bk0l
Subject(s) - chemistry , molecule , chemical physics , translational energy , ion , adsorption , charge (physics) , atomic physics , polyatomic ion , configuration interaction , computational chemistry , organic chemistry , physics , quantum mechanics
Molecular beams and laser spectrometry have been used to study nonadiabatic processes in the interaction of molecules with well‐characterized surfaces. The emission of exoelectrons and the formation of O − ions in the interaction of O 2 molecules with a Cs(√3 x √3) structure on Ru(001) is studied as a function of translational energy, extending previously reported results. The interaction of O 2 with an Al(111) surface exhibits an abstraction channel, which is predominant at translational energies smaller than 0.5 eV. In the interaction of NO 2 with an Al(111) surface, the operation of an abstraction channel resulting in O(a) and NO(g) is observed. All three examples are interpreted to indicate the significance of early charge transfer channels in molecular dissociative adsorption processes. Delayed charge transfer may lead to nonadiabatic reaction routes in this scenario.