Kinetic theory description of electron stimulated desorption

Richard Janow; Narkis Tzoar

doi:10.1016/0039-6028(77)90172-8

Kinetic theory description of electron stimulated desorption

Richard Janow, Narkis Tzoar

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

20 Scopus citations

Abstract

A first principles kinetic theory is developed, applicable to angular dependent emission in Electron Stimulated Desorption. Expressions for the ionic and neutral atom ESD cross sections are formulated and applied in a model calculation of O⁺ emission from W(111). Strong focussing of the outgoing ions was found, with the use of a model ion-solid potential in which the substrate was free of excitation. Off-axis spot groups were simulated. The peak ion energies obtained with this model are, however, small compared to experimental energies for the high coverage case. The need to introduce substrate excitations to describe this case is discussed.

Original language	English (US)
Pages (from-to)	253-272
Number of pages	20
Journal	Surface Science
Volume	69
Issue number	1
DOIs	https://doi.org/10.1016/0039-6028(77)90172-8
State	Published - Dec 1 1977
Externally published	Yes

All Science Journal Classification (ASJC) codes

Condensed Matter Physics
Surfaces and Interfaces
Surfaces, Coatings and Films
Materials Chemistry

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10.1016/0039-6028(77)90172-8

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title = "Kinetic theory description of electron stimulated desorption",

abstract = "A first principles kinetic theory is developed, applicable to angular dependent emission in Electron Stimulated Desorption. Expressions for the ionic and neutral atom ESD cross sections are formulated and applied in a model calculation of O+ emission from W(111). Strong focussing of the outgoing ions was found, with the use of a model ion-solid potential in which the substrate was free of excitation. Off-axis spot groups were simulated. The peak ion energies obtained with this model are, however, small compared to experimental energies for the high coverage case. The need to introduce substrate excitations to describe this case is discussed.",

author = "Richard Janow and Narkis Tzoar",

note = "Funding Information: * Research Spnsored in part by the US Office of Naval Research under ONR contract. No. N00014-75C-0949 and in part by the City University Faculty Research Award Program. Copyright: Copyright 2014 Elsevier B.V., All rights reserved.",

year = "1977",

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AU - Tzoar, Narkis

N1 - Funding Information: * Research Spnsored in part by the US Office of Naval Research under ONR contract. No. N00014-75C-0949 and in part by the City University Faculty Research Award Program. Copyright: Copyright 2014 Elsevier B.V., All rights reserved.

PY - 1977/12/1

Y1 - 1977/12/1

N2 - A first principles kinetic theory is developed, applicable to angular dependent emission in Electron Stimulated Desorption. Expressions for the ionic and neutral atom ESD cross sections are formulated and applied in a model calculation of O+ emission from W(111). Strong focussing of the outgoing ions was found, with the use of a model ion-solid potential in which the substrate was free of excitation. Off-axis spot groups were simulated. The peak ion energies obtained with this model are, however, small compared to experimental energies for the high coverage case. The need to introduce substrate excitations to describe this case is discussed.

AB - A first principles kinetic theory is developed, applicable to angular dependent emission in Electron Stimulated Desorption. Expressions for the ionic and neutral atom ESD cross sections are formulated and applied in a model calculation of O+ emission from W(111). Strong focussing of the outgoing ions was found, with the use of a model ion-solid potential in which the substrate was free of excitation. Off-axis spot groups were simulated. The peak ion energies obtained with this model are, however, small compared to experimental energies for the high coverage case. The need to introduce substrate excitations to describe this case is discussed.

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Kinetic theory description of electron stimulated desorption

Abstract

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