Systematic investigation of cluster radioactivity for uranium isotopes

The most probable cluster decays that can be observed for U217-238 isotopes are investigated. We identified the more-probable decays that commonly manifest themselves via cold valleys in the driving potentials with respect to the mass number and the atomic number, individually. The calculations are performed using the Skyrme-SLy4 nucleon-nucleon interaction, within the frame work of the performed cluster model. Among the indicated favored decays that involve emitted light clusters heavier than alpha-particle, twenty six decay modes display calculated half-life less than 10(22) years, with branching ratio larger than 10(-14)%. The estimated branching ratio for the a-decay of U-237, that did not observed yet, is B = 2.1 x 10(-10)% (T-alpha = 8.7 x 10(9) years). The indicated most probable decays that did not observed yet include the Ne-22 decay of U-232, Ne-25 and Si-32 decays of U-233, Ne-24 and Mg-29 decays of U-235, and the Si-34 and Mg-30 decay modes of U-238, with 10(-14) < B(%) < 10(-7). (C) 2017 Elsevier B.V. All rights reserved.