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Eleven new heaviest isotopes of elementsZ=105toZ=117identified among the products of
Author(s) -
Yu. Ts. Oganessian,
F. Sh. Abdullin,
P. D. Bailey,
Dennis Benker,
Megan Bennett,
S. N. Dmitriev,
Julie Ezold,
J. H. Hamilton,
R. Henderson,
М. Г. Иткис,
Yu. V. Lobanov,
Andrey Mezentsev,
K. J. Moody,
Stephen Nelson,
A. N. Polyakov,
C. E. Porter,
A. V. Ramayya,
F. D. Riley,
J. B. Roberto,
M. A. Ryabinin,
K. P. Rykaczewski,
R. N. Sagaidak,
D. A. Shaughnessy,
I. V. Shirokovsky,
M. A. Stoyer,
V. G. Subbotin,
R. Sudowe,
A. M. Sukhov,
Ros Taylor,
Yu. S. Tsyganov,
V. K. Utyonkov,
A. A. Voinov,
G. K. Vostokin,
P. A. Wilk
Publication year - 2011
Publication title -
physical review c
Language(s) - English
Resource type - Journals
eISSN - 1089-490X
pISSN - 0556-2813
DOI - 10.1103/physrevc.83.054315
Subject(s) - isotope , physics , nuclear physics , recoil , atomic physics
The heaviest isotopes of elements Z = 117 to Z = 105, 294117, 293117, 290115, 289115, 286113, 285113, 282Rg, 281Rg, 278Mt, 274Bh, and 270Db, were identified by means of the Dubna gas-filled recoil separator among the products of the 249Bk + 48Ca reaction. The details of the observed six decay chains, indicating the production and decay of isotopes 293117 and 294117, are presented and discussed. The decay energies and resulting half-lives of these new nuclei show a strong rise of stability with increasing neutron number, validating the concept of the island of enhanced stability for superheavy nuclei.

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