The Diffusion of 3He and 4He in LiF
Open Access
- 1 December 1969
- journal article
- Published by Walter de Gruyter GmbH in Zeitschrift für Naturforschung A
- Vol. 24 (12) , 1996-2000
- https://doi.org/10.1515/zna-1969-1221
Abstract
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/D4 was found to be at most 1.02 which is considerably smaller than the maximum classical value of 1.155.Keywords
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