Desorption-induced by electronic transition DIET

Madey T E ef a/1993 Structure and kinetics of electron beam damage in a chemisorbed monolayer PFjOn Ru(OOOI) Desorption Induced by Electronic Transitions DIET V vol 31, ed A R Burns, E B Stechel and D R Jennison (Berlin Springer)... 

The theoretical description of photochemistry is historically based on the diabatic representation, where the diabatic models have been given the generic label desorption induced by electronic transitions (DIET) [91]. Such theories were originally developed by Menzel, Gomer and Redhead (MGR) [92,93] for repulsive excited states and later generalized to attractive excited states by Antoniewicz [94]. There are many mechanisms by which photons can induce photochemistry/desorption direct optical excitation of the adsorbate, direct optical excitation of the metal-adsorbate complex (i.e., via a charge-transfer band) or indirectly via substrate mediated excitation (e-h pairs). The differences in these mechanisms lie principally in how localized the relevant electron and hole created by the light are on the adsorbate. 

The ejection of atoms or molecules from the surface of solid in response to primary electronic excitation is referred to as electronically stimulated desorption (ESD) or desorption induced by electronic transitions (DIET). Localization of electronic excitations at the surface of RGS induces DIET of atoms both in excited and in ground states, excimers and ions. Most authors (see e.g. Refs. [8,11,23,30] and references therein) discuss their results on DIET from RGS in terms of three different desorption mechanisms namely (i) M-STE-induced desorption of ground-state atoms (ii) "cavity-ejection" (CE) mechanism of desorption of excited atoms and excimers induced by exciton self-trapping at surface and (iii) "dissociative recombination" (DR) mechanism of desorption of excimers induced by dissociative recombination of trapped holes with electrons. 

E. Westin, A. Rosen and E. Matthias, in Desorption Induced by Electronic Transitions, DIET IV, Springer Series in Surface Science, Vol. 19. 

Desorption Induced by Electronic Transitions, DIET, at Oxide Surfaces... 

Desorption Induced by Electronic Transitions, DIET VIII, Eds. T. E. Madey, F. M. Zimmermann and R.A. Bartynski, Surf. Sci., 451 (2000)... 

C. Z. Dong, P. Nordlander and T.E. Madey, in Desorption Induced by Electronic Transitions, DIET IV, G. Bertz and P. Varga (Eds.), Springer Series in Surface Science, Vol. 19, Springer-Verlag, Berlin-Heidelberg, 1990, p. 34... 

M. Menges,B. Baumeister, K. Al-Shamery, B. Adaam, Th. Mull, H.-J.Freund, C. Fisher, D. Weide and P. Andersen, in Desorption Induced by Electronic Transitions, DIET V, A.R. Burns, E.B. Stechel and D.R. Jennison, Springer Series in Surface Sciences, Vol. 31, Springer, Berlin, 1993, p. 275... 

Desorption induced by electronic transitions, DIET, at oxide surfaces... 

An electron or photon incident on a surface can induce an electronic excitation. When the electronic excitation decays, an ion or neutral particle can be emitted from the surface as a result of the excitation. Such processes are known as desorption induced by electronic transitions (DIET) [ ]. The specific techniques are known as electron-stimulated desorption (ESD) and photon-stimulated desorption (PSD), depending on the method of... 

Bre Brenig, W., Menzel, D. "Desorption Induced by Electronic Transitions - DIET II." Springer Series in Surface Science. Ertl, G., Gomer, R. (eds.), Berlin Springer-Verlag, 1985. 

R.W. Dreyfus, Useful macroscopic phenomena due to laser ablation, in Desorption Induced by Electronic Transitions DIET TV. Springer Sen Surf. Sci., vol. 19 (Springer, Berlin, 1990),... 

The surface species are also desorbed as ions or neutrals through electronic excitation induced by the irradiation of electrons or photons with energies from 10 eV to more than 1000 eV. This is called desorption induced by electronic transition (DIET). Photon-stimulated desorption shows a clear selection rule, and the results are easy to interpret. However, the number of photon energies available in the laboratory is limited. On the other hand, electron energies can be varied easily. Thus, electron-stimulated desorption is more widely used. By measuring the desorption rate through electronic excitations, one obtains information on the atomic geometry at the surface as well as the adsorbed species and the desorption mechanisms. 

Figure 9 Typical result of ESDIAD for F ions desorbed from a PFg preadsorbed Ni 111) surface with different initial coverages. The result at low coverage demonstrates that the PF3 rotates at a higher temperature. (Reproduced with permission from Yates JT, Alvey MD, Dresser MJ, Lanzillotto A-M, and Uram KJ (1988) Observation of molecular rotors on surfaces by ESDIAD Studies of PF3 and NH3 chemisorption on Ni surfaces. In Desorption Induced by Electronic Transitions DIET III, pp. 100-108. Berlin Springer-Verlag.)...

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