Comparison of Radioactive and Stable Tl+ Diffusion in Potassium Chloride: Demonstration of a Transmutation Effect

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Science  08 Jul 1977:
Vol. 197, Issue 4299, pp. 159-161
DOI: 10.1126/science.197.4299.159


Radioactive 204Tl+ was found to diffuse in potassium chloride up to three times more rapidly than stable Tl+. The difference is attributed to the 204Pb2+ daughter element produced by βemission. A theoretical model accounts satisfactorily for the discrepancy and indicates that internal sources of cation vacancies are effective in maintaining electroneutrality at all but low temperatures.