Abstract
The predictions on the -decay chains of the isotopes of the superheavy nuclei with in the range have been done within the Coulomb and proximity potential model for deformed nuclei. A comparison of our calculated half-lives with the values computed using the Viola-Seaborg [J. Inorg. Nucl. Chem. 28, 741 (1966)] systematic, the universal curve of Poenaru et al. [Phys. Rev. C 74, 014312 (2006)], and the analytical formulas of Royer [J. Phys. G: Nucl. Part. Phys. 26, 1149 (2000)] show good agreement with each other. An extensive study on the spontaneous fission half-lives of all the isotopes under study has been performed to identify the mode of decay of these isotopes. The study reveals that the -decay half-lives and the mode of decay of the isotopes of , which are evaluated by using our formalisms, agree well with the experimental observations of Oganessian et al. [Phys. Rev. C 79, 024603 (2009)]. Our study on the isotopes of predicts that the decay restricts within the range as those isotopes with and those nuclei with 309 do not survive fission. We have also forecasted the mode of decay of superheavy nuclei as six consistent chains from the nuclei of , seven consistent chains from the nuclei of , five consistent chains from the nuclei of , and three consistent chains from the nuclei of , which could be of great interest to the experimentalists. The one-proton and two-proton separation energy calculations on superheavy nuclei have revealed that the isotopes spanning the range may be considered to be the probable proton emitters.
5 More- Received 11 October 2014
DOI:https://doi.org/10.1103/PhysRevC.90.054614
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