Fluid-solid phase transitions in three-dimensional complex plasmas under microgravity conditions

被引：63

作者：

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

Klumov, B. A. ^{[1
,2
]}

Huber, P. ^{[1
]}

Molotkov, V. I. ^{[2
]}

Lipaev, A. M. ^{[2
]}

Naumkin, V. N. ^{[2
]}

Ivlev, A. V. ^{[1
]}

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

Schwabe, M. ^{[1
]}

Morfill, G. E. ^{[1
]}

Petrov, O. F. ^{[2
]}

Fortov, V. E. ^{[2
]}

Malentschenko, Yu. ^{[3
]}

Volkov, S. ^{[3
]}

机构：

[1] Max Planck Inst Extraterr Phys, D-85741 Garching, Germany

[2] Joint Inst High Temp, Moscow 125412, Russia

[3] Yuri Gagarin Cosmonaut Training Ctr, Star City 141160, Russia

来源：

PHYSICAL REVIEW E | 2012年 / 85卷 / 06期

基金：

欧洲研究理事会; 俄罗斯基础研究基金会;

关键词：

BOND-ORIENTATIONAL ORDER; RANDOM CLOSE PACKING; STRUCTURAL-PROPERTIES; DUST PARTICLES; CRYSTAL-NUCLEATION; COULOMB-CRYSTAL; YUKAWA SYSTEMS; CRYSTALLIZATION; CHARGE; MODEL;

D O I：

10.1103/PhysRevE.85.066407

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：

Phase behavior of large three-dimensional (3D) complex plasma systems under microgravity conditions onboard the International Space Station is investigated. The neutral gas pressure is used as a control parameter to trigger phase changes. Detailed analysis of structural properties and evaluation of three different melting-freezing indicators reveal that complex plasmas can exhibitmelting by increasing the gas pressure. Theoretical estimates of complex plasma parameters allow us to identify main factors responsible for the observed behavior. The location of phase states of the investigated systems on a relevant equilibrium phase diagram is estimated. Important differences between the melting process of 3D complex plasmas under microgravity conditions and that of flat 2D complex plasma crystals in ground based experiments are discussed.

引用

页数：12

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