Abstract
The solubility of deuterium in lithium-lead alloys was measured as a function of temperature and atomic fraction of lithium, X Li . It was found that, at the atom fraction X Li = 0.78, corresponding to the composition “ Li 7 Pb 2”, the solubility in the solid phase is lower by a factor of a few hundred than that in the liquid phase. The solubility of deuterium in the Li-Pb system decreases drastically with decreasing X Li . At about X Li = 0.17 , which corresponds to the eutectic “ Li 17 Pb 83”, the solubility is independent of temperature. The transition from exothermal to endothermal dissolution occurred at about X Li ⩽ 0.17.
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