Abstract
A simple relation \((aZ_{c} + b)(Z_{d}/Q)^{1/2} + (cZ_{c} + d)\) of estimation of the half-life of cluster emission is further improved for cluster and \(\alpha \)-decays, separately, by incorporating isospin of parent nucleus as well as angular momentum taken away by the emitted particle. This improved version is not only found robust in producing experimental half-lives belonging to the trans-tin and trans-lead regions but also elucidates cluster emission in superheavy nuclei over the usual \(\alpha \)-decay. Considering daughter nuclei around the doubly magic \(^{100}\)Sn and \(^{208}\)Pb nuclei for trans-tin and trans-lead (including superheavy) parents, respectively, a systematic and extensive study of 56 \(\le \) Z \(\le \) 120 isotopes is performed for the light and heavy cluster emissions. A fair competition among cluster emission, \(\alpha \)-decay, spontaneous fission, and \(\beta \)-decay is observed in this broad range resulting in a substantial probability of C to Sr clusters from several nuclei, which demonstrates the adequacy of shell effects. The present article proposes a single, improved, latest-fitted, and effective formula of cluster radioactivity that can be used to estimate precise half-lives for a wide range of the periodic chart from trans-tin to superheavy nuclei.
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Data Availability Statement
This manuscript has no associated data or the data will not be deposited. [Authors’ comment: The data in manuscript is already in the various tables. Rest other data can be made available on request.]
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Acknowledgements
GS acknowledges the support provided by SERB (DST), Govt. of India under SIR/2022/000566, and would like to thank Prof. Nils Paar for his kind hospitality at the University of Zagreb, Croatia. AJ is indebted to Prof. S. K. Jain, Manipal University, Jaipur, India for his guidance.
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Saxena, G., Jain, A. Cluster radioactivity from trans-tin to superheavy region using an improved empirical formula. Eur. Phys. J. A 59, 189 (2023). https://doi.org/10.1140/epja/s10050-023-01102-8
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DOI: https://doi.org/10.1140/epja/s10050-023-01102-8