Generalised relations for the thermal diffusion factor of inert gas mixtures with one invariable constituent
✍ Scribed by B.N. Srivastava; S.C. Saxena
- Publisher
- Elsevier Science
- Year
- 1956
- Weight
- 481 KB
- Volume
- 22
- Category
- Article
- ISSN
- 0031-8914
No coin nor oath required. For personal study only.
✦ Synopsis
The variation of the thermal diffusion factor c~ for binary mixtures of inert gases, when one constituent is kept fixed and the other varied, has been investigated and semi-empirical formulae have been derived for the variation of c¢ with the proportionate mass difference of the molecules. These results have been explained in terms of the Chapman-Enskog formula for the case of Lennard-Jones 12 : 6 model by utilising the experimentally obtained unique dependence of the force constants Ei~. and r;j on the molecular mass of the variable constituent for a given series of mixtures. The same considerations have been applied to isotopes of monatomic molecules and suitable formulae have been deduced for c~, en and r n. The formulae have been tested by calculating the force constants of radon.