ChemInform Abstract: AN APPARATUS FOR MEASURING THE SECOND VIRIAL COEFFICIENT AT HIGH TEMPERATURES

Methods and apparatus used for compressibility measurements of gases in the temperature range 0° to 600 °C. are described. A further method which can be used at temperatures above 600 °C. is also described. Data for some measurements with pure helium at 0° and at 600 °C. are given, from which the values (in Amagat units), 0.527 × 10−3 per atm. ± 0.003 × 10−3 and 0.439 × 10−3 per atm. ± 0.005 × 10−3 were obtained for the second virial coefficient at 0° and 600 °C. respectively.

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A POTENTIAL FUNCTION FOR LIQUID HELIUM AT 0°K.

Canadian Journal of Physics ◽

10.1139/p54-083 ◽

1954 ◽

Vol 32 (12) ◽

pp. 759-763 ◽

Cited By ~ 1

Author(s):

C. F. A. Beaumont

Keyword(s):

Liquid Helium ◽

Potential Function ◽

High Temperatures ◽

Radial Distribution ◽

Isothermal Compressibility ◽

Virial Coefficient ◽

Distribution Curve ◽

Second Virial Coefficient ◽

Fair Agreement ◽

Radial Distribution Curve

A new potential function for liquid helium is obtained by modifying the Margenau potential function and summing over a suggested structure for the liquid. The new potential function leads to fair agreement with the first peak of the radial distribution curve for liquid helium, with the isothermal compressibility, and with second virial coefficient data at high temperatures.

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Quantum‐Mechanical Second Virial Coefficient of a Hard‐Sphere Gas at High Temperatures

The Journal of Chemical Physics ◽

10.1063/1.1671845 ◽

1969 ◽

Vol 51 (10) ◽

pp. 4675-4676 ◽

Cited By ~ 4

Author(s):

Trygve S. Nilsen

Keyword(s):

High Temperatures ◽

Hard Sphere ◽

Virial Coefficient ◽

Second Virial Coefficient ◽

Quantum Mechanical

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Interaction between argon atoms

Proceedings of the Royal Society of London Series A - Mathematical and Physical Sciences ◽

10.1098/rspa.1960.0080 ◽

1960 ◽

Vol 255 (1283) ◽

pp. 456-476 ◽

Cited By ~ 84

Keyword(s):

Temperature Dependence ◽

Interaction Energy ◽

High Temperatures ◽

Pressure Dependence ◽

Virial Coefficient ◽

Second Virial Coefficient

The interaction energy between argon atoms is correlated with the following experimental properties of argon: (1) the temperature dependence of the entropy of the crystal, (2) the temperature dependence of the energy of the crystal, (3) the temperature dependence of the density of the crystal, (4) the pressure dependence of the density of the crystal, (5) the temperature dependence of the second virial coefficient of the gas, (6) the viscosity at high temperatures of the gas. The interaction energy which best accords with all these properties is strikingly different from the commonly advocated difference between an inverse twelfth power and an inverse sixth power of the distance.

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