Tracer dispersion in a self-organized critical system

被引：178

作者：

Christensen, K ^{[1
]}

Corral, A ^{[1
]}

Frette, V ^{[1
]}

Feder, J ^{[1
]}

Jossang, T ^{[1
]}

机构：

[1] UNIV BARCELONA,DEPT FIS FONAMENTAL,E-08028 BARCELONA,SPAIN

来源：

PHYSICAL REVIEW LETTERS | 1996年 / 77卷 / 01期

关键词：

D O I：

10.1103/PhysRevLett.77.107

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We have studied experimentally transport properties in a slowly driven granular system which recently was shown to display self-organized criticality [Frette et al., Nature (London) 379, 49 (1996)]. Tracer particles were added to a pile and their transit times measured. The distribution of transit times is a constant with a crossover to a decaying power law. The average transport velocity decreases with system size. This is due to an increase in the active zone depth with system size. The relaxation processes generate coherently moving regions of grains mixed with convection. This picture is supported by considering transport in a 1D cellular automaton modeling the experiment.

引用

页码：107 / 110

页数：4

共 15 条

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