New elements 113 (ununtrium) and 115 (ununpentium)
It is claimed that recent experimental results involving the bomabardment o
f americium-243 with calcium-48 ions are consistent with the formation in th
e laboratory of a few atoms of elements 113 and 115. In experiments conducte
d at the JINR U400 cyclotron with the Dubna gas-filled separator between Jul
y 14 and Aug. 10, 2003, atomic decay patterns were observed that are said to
confirm the existence of element 115 and element 113. In these decay chains
, element 113 is produced via the alpha decay of element 115.
The results are published in the Feb. 1, 2004 issue of Physical Review C: "E
xperiments on the synthesis of element 115 in the reaction 243Am(48Ca,xn)291
–x115", Yu. Ts. Oganessian, V. K. Utyonkoy, Yu. V. Lobanov, F. Sh. Abdullin
, A. N. Polyakov, I. V. Shirokovsky, Yu. S. Tsyganov, G. G. Gulbekian, S. L.
Bogomolov, A. N. Mezentsev, S. Iliev, V. G. Subbotin, A. M. Sukhov, A. A. V
oinov, G. V. Buklanov, K. Subotic, V. I. Zagrebaev, M. G. Itkis, J. B. Patin
, K. J. Moody, J. F. Wild, M. A. Stoyer, N. J. Stoyer, D. A. Shaughnessy, J.
M. Kenneally, and R. W. Lougheed, Phys. Rev. C, 2004, 69, 021601(R).
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