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
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
收藏
页数:25
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