Accurate equation of state of H2−He binary mixtures up to 5.4 GPa
Accurate equation of state of H2−He binary mixtures up to 5.4 GPa
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DOI：
10.1103/physrevb.108.224112
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发表时间：
2023-12
影响因子：
3.7
通讯作者：
Charles Zoller;Muhtar Ahart;S. Duwal;Raymond C. Clay;Christopher T. Seagle;Young-Jay Ryu;Sergey Tkachev;S. Chariton;V. Prakapenka;Russell J. Hemley
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文献类型：
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作者：
Charles Zoller;Muhtar Ahart;S. Duwal;Raymond C. Clay;Christopher T. Seagle;Young-Jay Ryu;Sergey Tkachev;S. Chariton;V. Prakapenka;Russell J. Hemley
用布里渊散射光谱得到了296K下1：1和9：1摩尔混合物在0.5-5.4 Gpa范围内的精确(<；1%)状态方程，计算的状态方程与实验数据符合得很好。测得的速度与理想混合模型的平均吻合程度在0.5%以内。提出的EOS与测量密度的标准偏差在0.3%以下，与理想混合的标准偏差在1%以下。详细讨论了在测量和分析我们的状态方程时的精确度、精密度和误差来源。
Brillouin scattering spectroscopy has been used to obtain an accurate (<1%)equation of state (EOS) of 1:1 and 9:1molar 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. TheEOSs 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.