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Hot-Electron Femtochemistry at Surfaces: On the Role of Multiple Electron Processes in Desorption

Published

Author(s)

John William Gadzuk

Abstract

Aspects of molecular processes at surfaces due to sub-ps laser pulses of visible light are discussed here. Within the limits of the standard two-temperature model describing the temporatl evolution of fs laser-excited substrate electrons, a theoretical contribution to our understanding of desorption induced by fs laser stimulation is presented which includes, in a rudimentary way, multiple inelastic hot-electron scattering from the adsorbate. Results of the present modelsuggest that the degree of electron multiplicity (significantly less than 10) in fs-laser induced desorption is not as great as implied by previous DIMET (=desorption induced by multiple electronic transition) or stochastic friction models.
Citation
Chemical Physics
Volume
251
Issue
No. 1-3

Keywords

DIMET, femtochemistry, hot electrons, laser desorption

Citation

, J. (2000), Hot-Electron Femtochemistry at Surfaces: On the Role of Multiple Electron Processes in Desorption, Chemical Physics (Accessed April 15, 2024)
Created January 1, 2000, Updated February 19, 2017