A POTENTIAL FUNCTION FOR LIQUID HELIUM AT 0°K.

1954 ◽  
Vol 32 (12) ◽  
pp. 759-763 ◽  
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.

COMPRESSIBILITY OF GASES AT HIGH TEMPERATURES: I. METHODS OF MEASUREMENT AND APPARATUS

1949 ◽  
Vol 27b (4) ◽  
pp. 339-352 ◽  
Author(s):  
W. G. Schneider
Keyword(s):  
High Temperatures ◽  
Virial Coefficient ◽  
Second Virial Coefficient ◽  
Temperature Range ◽  
Pure Helium ◽  
Methods Of Measurement

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.

Interaction between argon atoms

1960 ◽  
Vol 255 (1283) ◽  
pp. 456-476 ◽  
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.

Statistical Thermodynamics of Two-Dimensional Fluids of Solid Nanoparticles

2003 ◽  
Vol 782 ◽  
Author(s):  
Liudmila A. Pozhar ◽  
John Maguire
Keyword(s):  
Isothermal Compressibility ◽  
Virial Coefficient ◽  
Second Virial Coefficient ◽  
Statistical Thermodynamics ◽  
Two Dimensional ◽  
Nano Composite ◽  
Rigid Particles ◽  
Polygonal Shape ◽  
Simulations And Modeling ◽  
Analytical Expressions

ABSTRACTThe second virial coefficient-based statistical thermodynamics of a diluted fluid of rigid particles of regular polygonal shape is discussed. Analytical expressions for the second virial coefficient, surface tension, isothermal compressibility and isothermal speed of sound are derived in this approximation. The obtained results provide analytical guidelines for numerical simulations and modeling studies of two-dimensional (2D) particulate fluids (thin films) widely used in processing of model (nano)composite materials and other technological processes.

scholarly journals The Second Virial Coefficient of a 6–9 Gas at High Temperatures

1952 ◽  
Vol 20 (4) ◽  
pp. 752-753 ◽  
Author(s):  
Leo F. Epstein ◽  
Celesta J. Hibbert
Keyword(s):  
High Temperatures ◽  
Virial Coefficient ◽  
Second Virial Coefficient
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