Long-jump probabilities in a BGK model for surface diffusion

Authors
Ferrando, R Montalenti, F Spadacini, R Tommei, GE
Citation
R. Ferrando et al., Long-jump probabilities in a BGK model for surface diffusion, CHEM P LETT, 315(3-4), 1999, pp. 153-157
Citations number
21
Categorie Soggetti
Physical Chemistry/Chemical Physics
Journal title
CHEMICAL PHYSICS LETTERS
ISSN journal
00092614 → ACNP
Volume
315
Issue
3-4
Year of publication
1999
Pages
153 - 157
Database
ISI
SICI code
0009-2614(199912)315:3-4<153:LPIABM>2.0.ZU;2-D
Abstract
The jump-length probability distribution (JLPD) in a periodic system is stu died using the solution of the linearized Boltzmann equation with BGK colli sion kernel. The equation is solved both by the matrix-continued-fraction m ethod and by direct numerical simulations. The JLPDs obtained by the BGK eq uation are compared to those derived from other kinetic models, such as the Langevin (Fokker-Planck) model. (C) 1999 Elsevier Science B.V. All rights reserved.