Experimental aspects of inelastic X-ray scattering studies on liquids under extreme conditions (P-T)

被引：3

作者：

Alatas, Ahmet ^{[1
]}

Sinn, Harald ^{[1
]}

Zhao, Jiyong ^{[1
]}

Said, Ayman H. ^{[1
]}

Leu, Bogdan M. ^{[1
]}

Sturhahn, Wolfgang ^{[1
]}

Alp, Ercan E. ^{[1
]}

Shen, Guoyin ^{[2
,3
]}

Prakapenka, Vitali B. ^{[4
]}

机构：

[1] Argonne Natl Lab, Adv Photon Source, Argonne, IL 60439 USA

[2] Carnegie Inst Washington, Geophys Lab, HPCAT, Argonne, IL USA

[3] Carnegie Inst Washington, Geophys Lab, HPSynC, Argonne, IL USA

[4] Univ Chicago, Consortium Adv Radiat Sources, Chicago, IL 60637 USA

来源：

HIGH PRESSURE RESEARCH | 2008年 / 28卷 / 03期

关键词：

inelastic X-ray scattering; collective excitations; liquid indium; diamond anvil cell;

D O I：

10.1080/08957950802208928

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

In this study, collective excitations of liquid indium are studied just above the melting point at different pressures (1.7 GPa, 240 degrees C; 3.0 GPa, 300 degrees C; 4.0 GPa, 360 degrees C). The pressures and temperatures are achieved by the use of an externally heated diamond anvil cell. Clear evidence for the existence of propagating modes is observed from the dynamical structure factor at constant momentum transfer (Q) up to about 18 nm(-1). The reason for the observed high elastic-scattering background is identified, and its effects on the determination of elastic properties such as viscosity are discussed.

引用

页码：175 / 183

页数：9

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