A quantum second virid coefficient for krypton gas is calculated using ab initio potential, Barker et al potential and Morse potential. Calculations have been made using Galitskii-Migdal-Feynman (GMF) formalism. Agreements with experiments is good though not perfect.
A theoretical model, based on the Galitskii-Migdal-Feynman formalism, is introduced for determining the scattering properties of argon gas, especially the "effective" total, viscosity and average cross-sections. The effective phase shifts are used to compute the quantum second virial coefficient in the temperature range 87.3-120 K. The sole input is the Hartree-Fock dispersion (HFD-B3) potential. The thermophysical properties of the gas are then calculated. The results are in good agreement with experimental data.
We have calculated total and viscosity cross sections for krypton gas at boiling point by using a Galitskii-Migdal-Feynman (GMF) formalism which is essentially an independent-pair model ‘dressed’ by a many-body medium. The interaction potential in our work is theHartree-Fock dispersion (HFD-B) potential.
In our paper, a theoretical model is introduced to calculate the effective phase shifts, and then the effective total cross section, the effective scattering length and the binding energy for krypton gas at different temperatures and different densities. This model is based on the Galitskii-Migdal-Feynman (GMF) formalism which is essentially an independent-pair model in the presence of a many-body medium. The interaction potential in our work is the Hartree-Fock dispersion (HFD-B) potential.
The thermodynamic properties of neon and argon gases are studied within the static fluctuation approximation (SFA). These properties include the total internal energy, pressure, entropy, compressibility and specific heat. The results are compared with those recently obtained within the Galitskii–Migdal–Feynman (GMF) formalism. The overall agreement is very good. An exception, however, is the specific-heat results for neon. While SFA gives results rather similar to those of the ideal gas, the corresponding GMF results are quite different. It is argued that the discrepancy seems to have arisen from quantum effects in conformity with very recent Monte Carlo computations. Whenever possible, our SFA results are compared to experimental data.
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