The Diffusion of 3He and 4He in LiF
- Resource Type
- Article
- Authors
- Kalbitzer, S; Kiko, J; Zähringer, J
- Source
- Zeitschrift für Naturforschung A; December 1969, Vol. 24 Issue: 12 p1996-2000, 5p
- Subject
- Language
- ISSN
- 09320784; 18657109
Helium isotopes were produced in single crystals of LiF by means of the nuclear reaction 6Li(n, 3H) 4He and by the subsequent decay of 3H into 3He. At a constant temperature of 620 °C the isotopic ratios of the outgassed helium isotopes were measured as a function of time respectively as a function of the released fraction. The ratio of the diffusion constants D3/D4was found to be at most 1.02 which is considerably smaller than the maximum classical value of 1.155.