On the approximation of transport properties in structured materials using momentum-transfer theory

被引：9

作者：

Boyle, G. J. ^{[1
]}

White, R. D. ^{[1
]}

Robson, R. E. ^{[1
]}

Dujko, S. ^{[2
]}

Petrovic, Z. Lj ^{[2
]}

机构：

[1] James Cook Univ, ARC Ctr Antimatter Matter Studies, Sch Engn & Phys Sci, Townsville, Qld 4810, Australia

[2] Univ Belgrade, Inst Phys, Belgrade 11080, Serbia

来源：

NEW JOURNAL OF PHYSICS | 2012年 / 14卷

基金：

澳大利亚研究理事会;

关键词：

NEGATIVE DIFFERENTIAL CONDUCTIVITY; CHARGED-PARTICLE TRANSPORT; GASEOUS ION MOBILITY; E-N VALUES; ELECTRIC-FIELDS; ARBITRARY STRENGTH; DNA-DAMAGE; SWARMS; AVALANCHES; DIFFUSION;

D O I：

10.1088/1367-2630/14/4/045011

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

In this paper, we present a fluid model for electrons and positrons in structured and soft-condensed matter utilizing dilute gas phase cross-sections together with a structure factor for the medium. Generalizations of the Wannier energy and Einstein (Nernst-Townsend) relations to account for coherent scattering effects present in soft-condensed matter are presented along with new expressions directly relating transport properties in the dilute gas and the structured matter phases. The theory is applied to electrons in a benchmark Percus-Yevick model and positrons in liquid argon, and the accuracy is tested against a multi-term solution of Boltzmann's equation (White and Robson 2011 Phys. Rev. E 84 031125).

引用

页数：25