Diffusion coefficient and interatomic potential of He–Ar at high temperatures

Autor:	J. J. Hurly, W. L. Taylor, F. R. Meeks, S. B. Wyrick
Rok vydání:	1990
Předmět:	Range (particle radiation) Work (thermodynamics) Chemistry Alloy engineering General Physics and Astronomy Interatomic potential Physical and Theoretical Chemistry Diffusion (business) engineering.material Atomic physics
Zdroj:	The Journal of Chemical Physics. 92:6786-6793
ISSN:	1089-7690 0021-9606
DOI:	10.1063/1.458265
Popis:	Measurements of the mutual diffusion coefficient D12 for the He/Ar gaseous system have been extended to 2050 K, approximately 600 deg beyond any previous work. The results, obtained in a tungsten–tantalum–hafnium alloy (‘‘T‐111’’) two‐bulb cell, are in excellent agreement with previous studies in the 200–1400 K range. An equation is presented which has been fitted to all available published D12 results. An HFD‐B interatomic potential is proposed which accurately predicts D12 within accepted experimental uncertainties.
Databáze:	OpenAIRE
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