A one-dimensional microscopic quantum mechanical theory of light enhanced desorption

Czeslaw Jedrzejek; Karl F. Freed; Shlomo Efrima; Horia Metiu

doi:10.1016/0039-6028(81)90519-7

A one-dimensional microscopic quantum mechanical theory of light enhanced desorption

Czeslaw Jedrzejek, Karl F. Freed, Shlomo Efrima, Horia Metiu

Department of Chemistry

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

69 Scopus citations

Abstract

A one-dimensional microscopic quantum mechanical model is used to inquire whether it is possible to enhance the desorption rate by employing a laser to induce vibrational excitation of the chemisorptive bond. For model parameters simulating CO/Cu it is found that the required laser intensity is very large, roughly 10⁴ times that of a conventional high power CO₂ laser (whose intensity we take to be 5 × 10¹⁰ W cm²). We suggest that surface roughness can be used to enhance substantially the effect of the laser and possibly to enable the observation of laser enhanced desorption.

Original language	English
Pages (from-to)	191-206
Number of pages	16
Journal	Surface Science
Volume	109
Issue number	1
DOIs	https://doi.org/10.1016/0039-6028(81)90519-7
State	Published - 1 Aug 1981

ASJC Scopus subject areas

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

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10.1016/0039-6028(81)90519-7

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title = "A one-dimensional microscopic quantum mechanical theory of light enhanced desorption",

abstract = "A one-dimensional microscopic quantum mechanical model is used to inquire whether it is possible to enhance the desorption rate by employing a laser to induce vibrational excitation of the chemisorptive bond. For model parameters simulating CO/Cu it is found that the required laser intensity is very large, roughly 104 times that of a conventional high power CO2 laser (whose intensity we take to be 5 × 1010 W cm2). We suggest that surface roughness can be used to enhance substantially the effect of the laser and possibly to enable the observation of laser enhanced desorption.",

author = "Czeslaw Jedrzejek and Freed, {Karl F.} and Shlomo Efrima and Horia Metiu",

note = "Funding Information: * On leave of absence from Department of Statistical Physics, Jagellonian University, Krakow, Poland. ** Research supported by MRL(NSF) facilities at the University of Chicago and a grant from the National Science Foundation. *** Supported by US-Israel Binational Science Foundation. t Research supported by NSF CHE 78-16181 and CHE 79-18773. i?{\textquoteright} A.P. Sloan Fellow and Camiile and Henry Dreyfus Teacher Scholar.",

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doi = "10.1016/0039-6028(81)90519-7",

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T1 - A one-dimensional microscopic quantum mechanical theory of light enhanced desorption

AU - Jedrzejek, Czeslaw

AU - Freed, Karl F.

AU - Efrima, Shlomo

AU - Metiu, Horia

N1 - Funding Information: * On leave of absence from Department of Statistical Physics, Jagellonian University, Krakow, Poland. ** Research supported by MRL(NSF) facilities at the University of Chicago and a grant from the National Science Foundation. *** Supported by US-Israel Binational Science Foundation. t Research supported by NSF CHE 78-16181 and CHE 79-18773. i?’ A.P. Sloan Fellow and Camiile and Henry Dreyfus Teacher Scholar.

PY - 1981/8/1

Y1 - 1981/8/1

N2 - A one-dimensional microscopic quantum mechanical model is used to inquire whether it is possible to enhance the desorption rate by employing a laser to induce vibrational excitation of the chemisorptive bond. For model parameters simulating CO/Cu it is found that the required laser intensity is very large, roughly 104 times that of a conventional high power CO2 laser (whose intensity we take to be 5 × 1010 W cm2). We suggest that surface roughness can be used to enhance substantially the effect of the laser and possibly to enable the observation of laser enhanced desorption.

AB - A one-dimensional microscopic quantum mechanical model is used to inquire whether it is possible to enhance the desorption rate by employing a laser to induce vibrational excitation of the chemisorptive bond. For model parameters simulating CO/Cu it is found that the required laser intensity is very large, roughly 104 times that of a conventional high power CO2 laser (whose intensity we take to be 5 × 1010 W cm2). We suggest that surface roughness can be used to enhance substantially the effect of the laser and possibly to enable the observation of laser enhanced desorption.

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VL - 109

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A one-dimensional microscopic quantum mechanical theory of light enhanced desorption

Abstract

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