Diffusion in the presence of partial absorbers

ABRAMSON, GUILLERMO; WIO, HORACIO

PHYSICAL REVIEW E - STATISTICAL PHYSICS, PLASMAS, FLUIDS AND RELATED INTERDISCIPLINARY TOPICS

American Physical Society

Año: 1996 vol. 53 p. 2265 - 2270

1063-651X

We analyze two models of partially absorbing media: one with a trapping reaction at static sites, and one with a single absorber driven by a dichotomic process. Our goal is to investigate the effect of the correlation time in the motion of the trap on the trapping dynamics. For fixed traps, we show different time behaviors arising from different distributions of traps. Analytical and simulated results of the mean distance from a trap to the nearest non-absorbed particle, and of the mean number of particles between traps, are shown. For a quasi-dynamics trap, we show how the dynamics of the absorption depends on the correlation time of the absorber. © 1996 The American Physical Society.