Abstract
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.
Highlights
Viscosity cross sections for argon, krypton and xenon from zero to 1keV using the phase shifts was calculated (Robert & Allan, 2015)
Total and viscosity Cross Sections: We start with boson-boson scattering in a medium
The GMF T-matrix was originally derived for many-fermionic systems; but it was later adapted to many-bosonic systems (Al-Barghouthi, 1997)
Summary
Viscosity cross sections for argon, krypton and xenon from zero to 1keV using the phase shifts was calculated (Robert & Allan, 2015). We shall invoke the Galitskii-Migdal-Feynman (GMF) T-matrix to calculate the effective phase shifts in the medium and use them to calculate the effective viscosity cross section at different temperature. The properties of the interatomic krypton potential are:(i) The repulsive term, describes Pauli repulsion at short ranges due to overlapping electron orbitals; (ii) The attractive long-range term, describes attraction at long ranges; (iii) The interaction energy is a minimum at the equilibrium position.
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