title: Random walks and anomalous diffusion in two-component random media.
abstract: The diffusion process in a random media consisting of two different components is studied by a random walk model. The latter is described by three parameters, namely, the fraction p of components, the ratio h of the diffusion coefficients in two components, and the parameter x defining a walker's jumps at the boundary. Depending on the values of these parameters the diffusion can be confined, normal, or anomalous (subdiffusion). The subdiffusion occurs, in particular, for h=0 (trapping model) and for x=0 (excluded volume model).
authors.affiliation: Department of Physics, Bar-Ilan University, Ramat-Gan 42900, Israel.
authors.forename: A E
authors.initials: AE
authors.lastname: Arinstein
authors.forename: M
authors.initials: M
authors.lastname: Gitterman
mesh_terms: D000465:Algorithms; D045424:Complex Mixtures / Q000032:analysis / Q000737:chemistry*; D003198:Computer Simulation; D004058:Diffusion; D008954:Models, Biological; D008956:Models, Chemical; D015233:Models, Statistical; D016138:Walking
chemical_list: D045424:Complex Mixtures