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Synthesis, Decay Properties, and Identification of Superheavy Nuclei Produced in 48Ca-induced Reactions.

Authors :
Oganessian, Yu. Ts.
Utyonkov, V. K.
Lobanov, Yu. V.
Abdullin, F. Sh.
Polyakov, A. N.
Sagaidak, R. N.
Shirokovsky, I. V.
Tsyganov, Yu. S.
Voinov, A. A.
Iliev, S.
Subbotin, V. G.
Sukhov, A. M.
Gulbekian, G. G.
Bogomolov, S. L.
Gikal, B. N.
Mezentsev, A. N.
Subotic, K.
Zagrebaev, V. I.
Itkis, M. G.
Moody, K. J.
Source :
AIP Conference Proceedings. 10/26/2007, Vol. 947 Issue 1, p269-276. 8p. 1 Diagram, 5 Graphs.
Publication Year :
2007

Abstract

Thirty-four new nuclides with Z = 104–116, 118 and N = 161–177 have been synthesized in the complete-fusion reactions of 238U, 237Np, 242,244Pu, 243Am, 245,248Cm, and 249Cf targets with 48Ca beams. The masses of evaporation residues were identified through measurements of the excitation functions of the xn-evaporation channels and from cross bombardments. The decay properties of the new nuclei agree with those of previously known heavy nuclei and with predictions from different theoretical models. A discussion of self-consistent interpretations of all observed decay chains originating from the parent isotopes 282,283112, 282113, 286–289114, 287,288115, 290–293116, and 294118 is presented. Decay energies and lifetimes of the neutron-rich superheavy nuclei as well as their production cross sections indicate a considerable increase in the stability of nuclei with the approach to the theoretically predicted nuclear shells with N = 184 and Z = 114. [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISSN :
0094243X
Volume :
947
Issue :
1
Database :
Academic Search Index
Journal :
AIP Conference Proceedings
Publication Type :
Conference
Accession number :
27296848
Full Text :
https://doi.org/10.1063/1.2813815