New data from the 243Am + 48Ca reaction give cross-bombardment verification of elements 113, 115 and 117

The reaction 243Am + 48Ca has been reinvestigated to provide new evidence for the discovery of elements 113, 115. Twenty eight new 288115 decay chains were detected in this reaction to increase from three to 31 the number of 288115 atoms observed. In addition, four new decay chains were observed for...

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Published in:Journal of physics. Conference series 2013-03, Vol.420 (1)
Main Authors: Hamilton, J H, Oganessian, Yu Ts, F Sh Abdullin, Dmitriev, S N, Gostic, J M, Henderson, R A, Itkis, M G, Moody, K J, Polyakov, A N, Ramayya, A V, Roberto, J B, Rykaczewski, K P, Sagaidak, R N, Shaughnessy, D A, Shirkovsky, I V, Stoyer, M A, Stoyer, N J, Subbotin, V G, Sukhov, A M, Tsyganov, Yu S, Utyonkov, V K, Voinov, A A, Vostokin, G K
Format: Article
Language:English
Subjects:
Alpha decay
Atomic properties
Bombardment
Chains
Physics
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Summary:The reaction 243Am + 48Ca has been reinvestigated to provide new evidence for the discovery of elements 113, 115. Twenty eight new 288115 decay chains were detected in this reaction to increase from three to 31 the number of 288115 atoms observed. In addition, four new decay chains were observed for the first time and assigned to the decay of 289115. These new 289115 events have the same properties for their decay chains as those observed for 289115 populated in the alpha decay of 293117 produced in the 249Bk + 48Ca reaction to provide cross-bombardment evidence. These new high statistics data sets and the cross-bombardment agreement provide definitive evidence for the discoveries of the new elements with Z = 113, 115, 117.
ISSN:1742-6588
1742-6596
DOI:10.1088/1742-6596/420/1/012011