Monte Carlo simulations of gas‐phase collisions in rapid desorption of molecules from surfaces

Monte Carlo simulations of gas‐phase collisions in rapid desorption of molecules from surfaces

We have examined the effects of collisions among the molecules desorbing from solid surfaces by means of Monte Carlo simulations, and have identified the conditions under which and to what extent these collisions would influence the experimentally observed product distributions. By simulating the ex...

Full description

Bibliographic Details
Main Authors: Ibrahim Ali , Noorbatcha, Lucchese, Robert R., Zeiri, Yehuda
Format: Article
Language:English
Published: American Institute of Physics (AIP) 1987
Subjects:
QD Chemistry
Online Access:http://irep.iium.edu.my/37067/
http://irep.iium.edu.my/37067/
http://irep.iium.edu.my/37067/
http://irep.iium.edu.my/37067/1/JCP1987_MC.pdf
id iium-37067
recordtype eprints
spelling iium-370672014-06-27T02:01:13Z http://irep.iium.edu.my/37067/ Monte Carlo simulations of gas‐phase collisions in rapid desorption of molecules from surfaces Ibrahim Ali , Noorbatcha Lucchese, Robert R. Zeiri, Yehuda QD Chemistry We have examined the effects of collisions among the molecules desorbing from solid surfaces by means of Monte Carlo simulations, and have identified the conditions under which and to what extent these collisions would influence the experimentally observed product distributions. By simulating the experiment performed by Cowin e t a l. [Surf. Sci. 7 8, 545 (1978)] on the laser induced desorption of D2 from tungsten, we have found that at high coverages each desorbate makes on average 2.9 collisions which decreases to no collisions at very low coverages. These collisions affect the product distribution at high coverages to such an extent that even if the nascent desorbed flux is under thermal equilibrium, these post‐desorption collisions could lead to nonequilibrium distributions. The effect of the post‐desorption collisions is influenced by the rate of heating the surface and the kinetics of the desorption process. American Institute of Physics (AIP) 1987-05-15 Article PeerReviewed application/pdf en http://irep.iium.edu.my/37067/1/JCP1987_MC.pdf Ibrahim Ali , Noorbatcha and Lucchese, Robert R. and Zeiri, Yehuda (1987) Monte Carlo simulations of gas‐phase collisions in rapid desorption of molecules from surfaces. Journal of Chemical Physics , 86 (10). 5816 -5824. ISSN 0021-9606 http://scitation.aip.org/content/aip/journal/jcp/86/10/10.1063/1.452511 10.1063/1.452511
repository_type Digital Repository
institution_category Local University
institution International Islamic University Malaysia
building IIUM Repository
collection Online Access
language English
topic QD Chemistry
spellingShingle QD Chemistry
Ibrahim Ali , Noorbatcha
Lucchese, Robert R.
Zeiri, Yehuda
Monte Carlo simulations of gas‐phase collisions in rapid desorption of molecules from surfaces
description We have examined the effects of collisions among the molecules desorbing from solid surfaces by means of Monte Carlo simulations, and have identified the conditions under which and to what extent these collisions would influence the experimentally observed product distributions. By simulating the experiment performed by Cowin e t a l. [Surf. Sci. 7 8, 545 (1978)] on the laser induced desorption of D2 from tungsten, we have found that at high coverages each desorbate makes on average 2.9 collisions which decreases to no collisions at very low coverages. These collisions affect the product distribution at high coverages to such an extent that even if the nascent desorbed flux is under thermal equilibrium, these post‐desorption collisions could lead to nonequilibrium distributions. The effect of the post‐desorption collisions is influenced by the rate of heating the surface and the kinetics of the desorption process.
format Article
author Ibrahim Ali , Noorbatcha
Lucchese, Robert R.
Zeiri, Yehuda
author_facet Ibrahim Ali , Noorbatcha
Lucchese, Robert R.
Zeiri, Yehuda
author_sort Ibrahim Ali , Noorbatcha
title Monte Carlo simulations of gas‐phase collisions in rapid desorption of molecules from surfaces
title_short Monte Carlo simulations of gas‐phase collisions in rapid desorption of molecules from surfaces
title_full Monte Carlo simulations of gas‐phase collisions in rapid desorption of molecules from surfaces
title_fullStr Monte Carlo simulations of gas‐phase collisions in rapid desorption of molecules from surfaces
title_full_unstemmed Monte Carlo simulations of gas‐phase collisions in rapid desorption of molecules from surfaces
title_sort monte carlo simulations of gas‐phase collisions in rapid desorption of molecules from surfaces
publisher American Institute of Physics (AIP)
publishDate 1987
url http://irep.iium.edu.my/37067/
http://irep.iium.edu.my/37067/
http://irep.iium.edu.my/37067/
http://irep.iium.edu.my/37067/1/JCP1987_MC.pdf
first_indexed 2023-09-18T20:53:09Z
last_indexed 2023-09-18T20:53:09Z
_version_ 1777410129234231296

Similar Items