(4)He Thermophysical Properties: New Ab Initio Calculations.
(4)He Thermophysical Properties: New Ab Initio Calculations.
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DOI：
10.6028/jres.112.006
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发表时间：
2007-03
影响因子：
1.5
通讯作者：
Mehl JB
中科院分区：
文献类型：
--
作者：
Hurly JJ;Mehl JB
自2000年以来，原子物理学家已经降低了氦-氦“从头算”势的不确定性;例如，在4玻尔时，从大约0.6%降低到0.1%，在5.6玻尔时，从0.8%降低到0.1%。这些结果使我们：（1）构造了一个新的原子间相互作用势函数ε 07，（2）重新计算了4 He从1 K到10，000 K的第二维里系数、粘度和热导率，（3）分析了ε 07的不确定性和电子-核子量子力学系统的Born-Oppenheimer近似传播的热物理性质的不确定性。我们纠正了以前出版物中的小错误[J. J. Hurly和M. R. Moldover，J.Res.Nat.Inst.StandardsTechnol.105，667（2000）]，并将我们的结果与2000年后发表的选定数据进行比较。表中的从头算结果可作为测量热物理性质的标准。
Since 2000, atomic physicists have reduced the uncertainty of the helium-helium “ab initio” potential; for example, from approximately 0.6 % to 0.1 % at 4 bohr, and from 0.8 % to 0.1 % at 5.6 bohr. These results led us to: (1) construct a new inter-atomic potential ϕ07, (2) recalculate values of the second virial coefficient, the viscosity, and the thermal conductivity of 4He from 1 K to 10,000 K, and (3), analyze the uncertainties of the thermophysical properties that propagate from the uncertainty of ϕ07 and from the Born-Oppenheimer approximation of the electron-nucleon quantum mechanical system. We correct minor errors in a previous publication [J. J. Hurly and M. R. Moldover, J. Res. Nat. Inst. Standards Technol. 105, 667 (2000)] and compare our results with selected data published after 2000. The ab initio results tabulated here can serve as standards for the measurement of thermophysical properties.