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Title:
Possible Existence of Cm247 or Its Daughters in Nature
Authors:
Diamond, H.; Friedman, A. M.; Gindler, J. E.; Fields, P. R.
Affiliation:
AA(Argonne National Laboratory, Lemont, Illinois), AB(Argonne National Laboratory, Lemont, Illinois), AC(Argonne National Laboratory, Lemont, Illinois), AD(Argonne National Laboratory, Lemont, Illinois)
Publication:
Physical Review, vol. 105, Issue 2, pp. 679-680
Publication Date:
01/1957
Origin:
APS
DOI:
10.1103/PhysRev.105.679
Bibliographic Code:
1957PhRv..105..679D

Abstract

The absence of any detectable Pu243 daughter activity in a sample of curium containing two micrograms of Cm247 indicates that the alpha half-life of Cm247 exceeds 4×107 years and probably exceeds 9×107 years. The possibilities of finding Cm247 in nature and of finding high U235: U238 ratios in very old rare-earth minerals are discussed.
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