Abstract
decay is a common and important process of natural radioactivity of the heavy and superheavy nuclei. From the decay of nuclei, we can obtain much more information of nuclei structure. In our previous works [X.-D. Sun et al., Phys. Rev. C 93, 034316 (2016); X.-D. Sun et al., Phys. Rev. C 95, 014319 (2017)], we have done systematic study on the preformation probability of both the even-even and odd- nuclei within the two-potential approach. The preformation probabilities will systematically change due to the shell effect, proton-neutron correlation, and so on. This work is the extension of the previous works. In this work, we systematically study the decay of doubly odd nuclei. We find that for superallowed decay the preformation probabilities of doubly odd nuclei are larger than those of odd- ones in general, and for the heavier nuclei the extra neutrons suppress the proton-neutron correlation resulting in the small preformation probabilities. The calculated results can well reproduce the experimental half-lives. The half-lives of the decay chain beginning from nuclide are also predicted and compared with various empirical formulas.
- Received 22 January 2017
DOI:https://doi.org/10.1103/PhysRevC.95.044303
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