Relaxation of saturated random sequential adsorption packings of discorectangles aligned on a line

Abstract

Relaxation of the packing of elongated particles (discorectangles) aligned on a line was studied numerically. The aspect ratio (length-to-width ratio) for the discorectangles was varied within the range $\epsilon \in [1;50]$. The initial jamming (saturated) state was produced using the basic variant of the random sequential adsorption (RSA) model with random positions and orientations of particles. The relaxation was performed by allowing rotational and translational diffusion motions of the particles wile their centers remained located on the line. The effects of the aspect ratio $\epsilon$ on the kinetics of relaxation, the orientation order parameter and the distribution function of the distances between nearest-neighbor discorectangles were analyzed. The transport properties of the resulting 1D systems were also analyzed by using the diffusion of a tracer particle (random walker) between the nearest-neighbor discorectangles. In the relaxed states the anomalous diffusion was observed having a hopping exponent $d_w>2$ dependent upon $\epsilon$.

7 pages, 8 figures, 35 references (refs were corrected in v.2)

References in corpus (6)

• Anomalous diffusion: A basic mechanism for the evolution of inhomogeneous systems
• Analytic approaches of the anomalous diffusion: a review
• Sedimentation of a suspension of rods: Monte Carlo simulation of a continuous two-dimensional problem
• Trapped by the drift
• "Paris car parking problem" for partially ordered discorectangles on a line
• Optimal random deposition of interacting particles

Cited by in corpus (1)

• Percolation connectivity in deposits obtained using competitive random sequential adsorption of binary disk mixtures