Desorption kinetics mediated by surface phonon modes

E. Goldys; Z. W. Gortel; H. J. Kreuzer

doi:10.1016/0039-6028(82)90678-1

Desorption kinetics mediated by surface phonon modes

E. Goldys^*, Z. W. Gortel, H. J. Kreuzer

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

28 Citations (Scopus)

Abstract

A quantum statistical theory of physisorption kinetics is formulated taking proper account of the surface phonon modes of a semi-infinite solid. Desorption times are shorter than those calculated with bulk phonons by a factor two to three. For mobile physisorption the rates are dominated by the Rayleigh mode, for localized physisorption by the bulk-like shear horizontal mode. An effective surface Debye temperature is deduced that is about 0.65 to 0.8 times the bulk Debye temperature.

Original language	English
Pages (from-to)	33-65
Number of pages	33
Journal	Surface Science
Volume	116
Issue number	1
DOIs	https://doi.org/10.1016/0039-6028(82)90678-1
Publication status	Published - 1 Apr 1982
Externally published	Yes

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title = "Desorption kinetics mediated by surface phonon modes",

abstract = "A quantum statistical theory of physisorption kinetics is formulated taking proper account of the surface phonon modes of a semi-infinite solid. Desorption times are shorter than those calculated with bulk phonons by a factor two to three. For mobile physisorption the rates are dominated by the Rayleigh mode, for localized physisorption by the bulk-like shear horizontal mode. An effective surface Debye temperature is deduced that is about 0.65 to 0.8 times the bulk Debye temperature.",

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AU - Goldys, E.

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AU - Kreuzer, H. J.

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N2 - A quantum statistical theory of physisorption kinetics is formulated taking proper account of the surface phonon modes of a semi-infinite solid. Desorption times are shorter than those calculated with bulk phonons by a factor two to three. For mobile physisorption the rates are dominated by the Rayleigh mode, for localized physisorption by the bulk-like shear horizontal mode. An effective surface Debye temperature is deduced that is about 0.65 to 0.8 times the bulk Debye temperature.

AB - A quantum statistical theory of physisorption kinetics is formulated taking proper account of the surface phonon modes of a semi-infinite solid. Desorption times are shorter than those calculated with bulk phonons by a factor two to three. For mobile physisorption the rates are dominated by the Rayleigh mode, for localized physisorption by the bulk-like shear horizontal mode. An effective surface Debye temperature is deduced that is about 0.65 to 0.8 times the bulk Debye temperature.

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DO - 10.1016/0039-6028(82)90678-1

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SP - 33

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JO - Surface Science

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Desorption kinetics mediated by surface phonon modes

Abstract

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