Campus Units

Physics and Astronomy, Mathematics, Ames Laboratory

Document Type

Article

Publication Version

Published Version

Publication Date

9-1995

Journal or Book Title

Physical Review E

Volume

52

Issue

3

First Page

2310

Last Page

2317

DOI

10.1103/PhysRevE.52.2310

Abstract

We consider the monomer-dimer surface reaction without surface diffusion for various dimer adsorption mechanisms, described below. After a dimer impinges ''end on'' at an empty site, its bottom atom remains there while its top atom searches N1 sites, either in a local neighborhood (N-local models), or randomly located on the surface (N-random models), to find a second empty site. If one is found, the dimer can then adsorb dissociatively. The N-local models have a reactive window of finite width in the relative impingement rates, bordered by poisoning transitions, whereas the N-random models exhibit true bistability. As N increases, the reactivity is either strictly or effectively confined to relative impingement rates close to the stoichiometric ratio. We precisely analyze the limiting behavior as N->oo.

Comments

This article is from Physical Review E 52 (1995): 2310, doi:10.1103/PhysRevE.52.2310 .

Copyright Owner

American Physical Society

Language

en

File Format

application/pdf

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