Studies on cluster decay from trans-lead nuclei using different versions of nuclear potentials

Santhosh, K. P.; Sukumaran, Indu

doi:10.1140/epja/i2017-12309-3

Cited by 19 publications

(17 citation statements)

References 71 publications

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“…In this work, our calculations are extended to evaluate both α and cluster decay half-lives. Our results are compared with the available experimental data and with the calculations of some recent studies [5,35,36]. A very good agreement with the experimental data was achieved in both cases.…”

Section: Introductionsupporting

confidence: 76%

“…The parameter Δ is quite difficult to be obtained from equation (16). However, by fitting our calculations with CPPM calculations of [19] and the available experimental data of [5,19,35], we found that Δ can be taken to be approximately constant for each type of cluster decay including α-decay. Within the basic assumption of the physical process of the decay; the cluster should be formed first (preformed) inside the parent and carry out multiple hits to the coulomb barrier.…”

Section: Theoretical Frameworkmentioning

confidence: 86%

“…However, the decay products are relatively lighter than typical binary fission fragments [1][2][3][4]. This phenomenon was first predicted theoretically in 1980 by Sandulescu and Poenaru and Greiner [5,6]. Later in 1984, the emission of 14 C cluster from the parent nucleus 223 Ra was confirmed experimentally by Rose and Jones in a huge background of α particles [7].…”

Section: Introductionmentioning

confidence: 89%

“…Later in 1984, the emission of 14 C cluster from the parent nucleus 223 Ra was confirmed experimentally by Rose and Jones in a huge background of α particles [7]. After this discovery intense experimental research led to the detection of the emission of even heavier clusters than 14 C up to Si 34 from various radioactive nuclei in the trans-lead region [1,5,[8][9][10][11][12].…”

Section: Introductionmentioning

confidence: 99%

“…In all these cluster detection events, either α-decay or spontaneous fission was found to be the dominant decay mode. Usually cluster emission was noticed to be less probable especially in the super-heavy nuclei region [5]. The low probability of cluster decay distrusted its significance until Poenaru et al [13,14] showed the possibility of finding cases in which cluster decay can compete with α-decay particularly in the super-heavy nuclei region [5].…”

Section: Introductionmentioning

confidence: 99%

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Cluster decay half-lives and preformation probabilities

et al. 2020

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An improved semi-analytic approach to the barrier penetration probability is developed in the frame work of the Wentzel-Kramers-Brillouin (WKB) approximation. It is used to calculate decay half-lives and preformation probabilities for a set of 304 cluster emitters in the range 87 ≤ Z ≤ 96 and a set of 390 α-emitters in the range 52 ≤ Z ≤ 120. For cluster decay, the validity of our approach is tested against Coulomb and proximity potential model (CPPM) by comparing decay half-lives and barrier penetration probabilities. Our results are found to be in a good agreement with CPPM calculations and with the available experimental data. In case of α-decay, our calculations are tested against the experimental data and also a very good agreement is achieved. In both cases, results are also compared with calculations of some other well known universal decay laws that are used in many recent studies. Our approach shows a better agreement with experimental data than most of the other models. Our study is extended to calculate the assault frequency and preformation probability of the cluster inside the parent nucleus. A strong correlation is obtained for all these parameters with each other. Neutron shell closures are found to be more important in the cluster decay process than proton shell closure. It is also noted that the odd–even staggering behavior dominates the decay processes involving the emission of clusters with odd neutron number.

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Section: Introductionsupporting

confidence: 76%