Accurate calculations of second dielectric virial coefficient of noble gases

被引:0
|
作者
Song B. [1 ]
Yang M. [1 ]
An R. [2 ]
Wang X. [1 ]
机构
[1] School of Energy and Power Engineering, Xi'an Jiaotong University, Xi'an, 710049, Shaanxi
[2] Inner Mongolia Huineng Coal Chemical Co., Ltd., Ordos, 017200, Inner Mongolia
来源
关键词
Computational chemistry; Dielectric virial; Noble gas; Statistical thermodynamics; Thermodynamic properties;
D O I
10.11949/0438-1157.20190579
中图分类号
学科分类号
摘要
The state-of-the-art ab initio potentials and polarizabilities in the literature were used in this work to compute the second dielectric virial coefficient of pure light noble gases. The systems considered here are helium-4, helium-3, neon, and argon. The second dielectric virial coefficient was calculated using the classical statistical-mechanics formulas with quantum corrections up to the second order and the [1/1] Padé approximant was applied to extend the temperature range of the calculated values down to T = 25 K. The possible uncertainty sources of the present predictions and the uncertainty of the theoretical values estimated from the uncertainties of potentials and polarizabilities were identified. The critical assessment of the computed values and the experimental data in the literature with a relative larger uncertainty shows that the calculated values in this work can be used with confidence in research areas relating to the second dielectric virial coefficient of light noble gases. © All Right Reserved.
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页码:50 / 53
页数:3
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