Behaviour of the self-diffusion coefficient of Kr at low densities
โ Scribed by P. Codastefano; M.A. Ricci; V. Zanza
- Publisher
- Elsevier Science
- Year
- 1978
- Tongue
- English
- Weight
- 423 KB
- Volume
- 92
- Category
- Article
- ISSN
- 0378-4371
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โฆ Synopsis
We report high precision measurements of the self-diffusion coefficient of Kr performed along the isotherm T = 293 K, in the density range 0.03412 g/cm'. The first correction term of the expansion of pD in powers of density is obtained and compared with the result for a hard-sphere fluid.
๐ SIMILAR VOLUMES
The diffusion coefficient of '%r in natural krypton has been measured as a function of density. T'hc results deviate significantly from the values predicted by the Enskog theory. At low densities. the behaviour can be described by regarding the gas as a monomer-dimer mixture.
By inems of 2 moiecul~ dynemic d method the s=lfdXfusion coelficient of gseous systems hzve been c;i!cul~ted at densities below the critic& it has been four,d thei the artrzctive pxt of tie ilXCiZlOICcUls~ potcr+I !lZS 2 EZ2rk&!e ii!fluence on the density dependence of diffution. h:oreowr, sho;t-tim
In this paper are reported NMR spin-echo measurements of the self-diffusion coefficient of chlorotrifluoromethane at 30% 50 ยฐ and 75ยฐC over the density range 3 to 15 mol dm 3. No evidence was found for the type of critical region anomaly recently reported by Duffield and Harris for carbon dioxide. T