14C in uranium and thorium minerals: a signature of cluster radioactivity?
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Springer Nature
Abstract
Various uranium and thorium minerals have been analysed with accelerator mass spectrometry to determine their 14C content. It is found that, whenever the contribution from secondary reactions such as the 11B(α,p)14C is sufficiently low, the 14C concentration is consistent with that expected from 14C (spontaneous) cluster radioactivity from radium isotopes of the uranium and thorium natural series. © Springer-Verlag 1999
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Bonetti, R., Guglielmetti, A., Poli, G., Sacchi, E., Fink, D., Hotchkis, M. A. C., Jacobsen, G. E., Lawson, E. M., Hua, Q., Smith, A. M. & Tuniz, C. (1999). 14C in uranium and thorium minerals: a signature of cluster radioactivity?. The European Physical Journal A - Hadrons and Nuclei, 5(2), 235-238. doi:10.1007/s100500050279