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Random Sequential Adsorption on a Line: Mean-Field Theory of Diffusional Relaxation | | Vladimir Privman
; Mustansir Barma
; | | Date: |
3 Jul 1992 | | Journal: | J. Chem. Phys. 97, 6714-6719 (1992) DOI: 10.1063/1.463677 | | Subject: | cond-mat | | Abstract: | We develop a new fast-diffusion approximation for the kinetics of deposition of extended objects on a linear substrate, accompanied by diffusional relaxation. This new approximation plays the role of the mean-field theory for such processes and is valid over a significantly larger range than an earlier variant, which was based on a mapping to chemical reactions. In particular, continuum-limit off-lattice deposition is described naturally within our approximation. The criteria for the applicability of the mean-field theory are derived. While deposition of dimers, and marginally, trimers, is affected by fluctuations, we find that the k-mer deposition kinetics is asymptotically mean-field like for all k=4,5,..., where the limit k->infinity, when properly defined, describes deposition-diffusion kinetics in the continuum. | | Source: | arXiv, cond-mat/9207004 | | Services: | Forum | Review | PDF | Favorites | |
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