Transport Properties of Spin-Polarized Atomic Hydrogen Using Generalized Scattering Theory

• Published in: Journal of low temperature physics Vol. 190; no. 3-4; pp. 101 - 119
• Main Authors: Joudeh, B. R., Sandouqa, A. S.
• Format: Journal Article
• Language: English
• Published: New York Springer US 01.02.2018; Springer Nature B.V
• Subjects: Characterization and Evaluation of Materials; Condensed Matter Physics; Cross-sections; Diffusion coefficient; Heat transfer; Hydrogen; Low temperature physics; Magnetic Materials; Magnetism; Morse potential; Physics; Physics and Astronomy; Scattering; Thermal conductivity; Thermophysical properties; Virial coefficients; Viscosity; Galitskii–Migdal–Feynman formalism; Transport properties; Second virial coefficient; Average total and viscosity cross sections; ); Spin-polarized atomic hydrogen; Thermophysical properties
• ISSN: 0022-2291; 1573-7357
• DOI: 10.1007/s10909-017-1824-9

Our results for the scattering and thermophysical properties of spin-polarized atomic hydrogen ( H ↓ ) have been presented in the temperature range 0.01–10 K using the Galitskii–Migdal–Feynman formalism. These results include the quantum second virial coefficient, the average total and viscosity cross sections, the viscosity, the diffusion coefficient, and the thermal conductivity. The calculations have been undertaken using three triplet-state potentials: Morse-type, Silvera and Born–Oppenheimer potentials. The Morse potential is less attractive and very simple, but less accurate to describe spin-polarized atomic hydrogen. That explains the differences between it and the other two potentials, which are clearly better. From the results of the average total cross sections, it is concluded the H ↓ remains a gas even at low temperature. The viscosity, the thermal conductivity, and the diffusion coefficients of H ↓ increase in all cases with increasing temperature.