Accurate equation of state of H2-He binary mixtures up to 5.4 GPa

被引：2

作者：

Zoller, Charlie M. ^{[1
]}

Ahart, Muhtar ^{[1
]}

Duwal, Sakun ^{[2
]}

Clay III, Raymond C. ^{[2
]}

Seagle, Christopher T. ^{[2
]}

Ryu, Young Jay ^{[3
]}

Tkachev, Sergey ^{[3
]}

Chariton, Stella ^{[3
]}

Prakapenka, Vitali ^{[3
]}

Hemley, Russell J. ^{[1
,4
,5
]}

机构：

[1] Univ Illinois, Dept Phys, Chicago, IL 60607 USA

[2] Sandia Natl Labs, Albuquerque, NM 87125 USA

[3] Univ Chicago, Ctr Adv Radiat Sources, Chicago, IL 60637 USA

[4] Univ Illinois, Dept Chem, Chicago, IL 60607 USA

[5] Univ Illinois, Dept Earth & Environm Sci, Chicago, IL 60607 USA

来源：

PHYSICAL REVIEW B | 2023年 / 108卷 / 22期

基金：

美国国家科学基金会;

关键词：

X-RAY-DIFFRACTION; BRILLOUIN-SCATTERING; SOUND-VELOCITY; FLUID HYDROGEN; METAL TRANSITION; REFRACTIVE-INDEX; HIGH-TEMPERATURE; SOLID HYDROGEN; HIGH-PRESSURES; PHASE-DIAGRAM;

D O I：

10.1103/PhysRevB.108.224112

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Brillouin scattering spectroscopy has been used to obtain an accurate (<1%) rho-P equation of state (EOS) of 1:1 and 9:1 H-2-He molar mixtures from 0.5 to 5.4 GPa at 296 K. Our calculated equations of state indicate close agreement with the experimental data right to the freezing pressure of hydrogen at 5.4 GPa. The measured velocities agree on average, within 0.5%, of an ideal mixing model. The rho-P EOSs presented have a standard deviation of under 0.3% from the measured densities and under 1% deviation from ideal mixing. A detailed discussion of the accuracy, precision, and sources of error in the measurement and analyses of our equations of state is presented.

引用

页数：11

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