Izvorni znanstveni članak
Quantum transport properties of gaseous para and ortho-hydrogen at low temperatures
M. Tag El-Din A. Kamal
; Theoretical Physics Laboratory, National Research Centre, Dokki, Cairo, Egypt
A. Mohamed M. El-Shimy
; Physics Department, Faculty of Science, El Minia University, El Minia, Egypt
Sažetak
The viscosity, heat conductivity and diffusion coefficients of para- and ortho-hydrogen and their mixtures are investigated quantum mechanically using the modified Buckingham potential function for a temperature range 1.85 K-22.2 K. The calculations were carried out for various para-ortho concentrations. Our results are compared with available theoretical and experimental data; the agreement with both is fairly good. Also, the calculations show that the viscosity and heat conductivity of ortho-hydrogen is smaller than those of para-hydrogen in accordance with the measurements of Becker and Stehl. The thermal diffusion factor of para-and ortho¬-hydrogen is calculated for different concentrations.
Ključne riječi
Hrčak ID:
331159
URI
Datum izdavanja:
6.4.1987.
Posjeta: 486 *