Ion sphere model for Yukawa systems (dusty plasmas)

被引：38

作者：

Khrapak, S. A. ^{[1
,2
]}

Khrapak, A. G. ^{[2
]}

Ivlev, A. V. ^{[3
]}

Thomas, H. M. ^{[1
]}

机构：

[1] Deutsch Zentrum Luft & Raumfahrt, Forsch Grp Komplexe Plasmen, Oberpfaffenhofen, Germany

[2] Joint Inst High Temp RAS, Moscow, Russia

[3] Max Planck Inst Extraterr Phys, D-85748 Garching, Germany

来源：

PHYSICS OF PLASMAS | 2014年 / 21卷 / 12期

基金：

俄罗斯科学基金会;

关键词：

MONTE-CARLO SIMULATIONS; FLUID TRIPLE POINT; EQUATION-OF-STATE; COLLECTIVE MODES; PHASE-DIAGRAM; DYNAMICS; WAVES; FCC; CRYSTALS; LIQUIDS;

D O I：

10.1063/1.4904309

中图分类号：

O35 [流体力学]; O53 [等离子体物理学];

学科分类号：

070204 ; 080103 ; 080704 ;

摘要：

Application of the ion sphere model (ISM), well known in the context of the one-component-plasma, to estimate thermodynamic properties of model Yukawa systems is discussed. It is shown that the ISM approximation provides fairly good estimate of the internal energy of the strongly coupled Yukawa systems, in both fluid and solid phases. Simple expressions for the excess pressure and isothermal compressibility are derived, which can be particularly useful in connection to wave phenomena in strongly coupled dusty plasmas. It is also shown that in the regime of strong screening a simple consideration of neighboring particles interactions can be sufficient to obtain quite accurate estimates of thermodynamic properties of Yukawa systems. (C) 2014 AIP Publishing LLC.

引用

页数：9

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