Effective potentials of dissipative hard spheres in granular matter

被引：12

作者：

Bordallo-Favela, R. A. ^{[1
]}

Ramirez-Saito, A. ^{[1
]}

Pacheco-Molina, C. A. ^{[1
]}

Perera-Burgos, J. A. ^{[1
,2
]}

Nahmad-Molinari, Y. ^{[1
]}

Perez, G. ^{[2
]}

机构：

[1] Zona Univ, Univ Autonoma San Luis Potosi, Inst Fis, San Luis Potosi 78290, Mexico

[2] CINVESTAV IPN, Dept Fis Aplicada, Merida 97310, Yucatan, Mexico

来源：

EUROPEAN PHYSICAL JOURNAL E | 2009年 / 28卷 / 04期

关键词：

PHASE TRANSITION; DYNAMICS; SYSTEM; FLUIDS; GASES;

D O I：

10.1140/epje/i2008-10432-2

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

We present an experimental study of the spatial correlations of a quasi-two-dimensional dissipative gas kept in a non-static steady state via vertical shaking. From high temporal resolution images we obtain the Pair Distribution Function (PDF) for granular species with different restitution coefficients. Effective potentials for the interparticle interaction are extracted using the Ornstein-Zernike equation with the Percus-Yevick closure. From both the PDFs and the corresponding effective potentials, we find a clear increase of the spatial correlation at contact with the decreasing values of the restitution coefficient.

引用

页码：395 / 400

页数：6

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