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Author(s) -
Barnes
Publication year - 1961
Publication title -
annals of the new york academy of sciences
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.712
H-Index - 248
eISSN - 1749-6632
pISSN - 0077-8923
DOI - 10.1111/j.1749-6632.1961.tb35445.x
Subject(s) - annals , citation , computer science , library science , information retrieval , history , classics
work is to be freshly separated from monazite sand to ensure radioactive equilibrium (equal activities) for Th228 and Th232 and a small correction for the presence of ThZ3O (decay product of uranium) to be determined by a-pulse analysis. The method is simple and direct and should provide a decay constant with high accuracy. In conclusion, I reiterate that the Lurrently accepted decay constants for uranium and thorium are probably accurate to the order of 2 per cent; although we may not be able to improve on this, we shall attempt it in any case.