Theoretical studies on structural properties and decay modes of 119 isotopes
Sep 20, 201714 pages
Published in:
- Eur.Phys.J.Plus 138 (2023) 5, 467
- Published: May 27, 2023
e-Print:
- 1709.07311 [nucl-th]
Citations per year
Abstract: (Springer)
Within the axially deformed relativistic mean field with parametrisation, the different bulk properties like binding energy, quadrupole deformation parameter, separation energies, density profile and shape co-existence for Z = 119 isotopic chain within the mass range 284 A 375 are computed. Further, a competition between possible decay modes such as α-decay, -decay and spontaneous fission (SF) of the isotopic chain of Z = 119 superheavy nuclei under study is systematically analysed within self-consistent relativistic mean field model and a close agreement is noticed among the calculations performed using various semi-empirical formulae and also with the estimations made by finite range droplet model (FRDM) wherever available. Our analysis confirmed that α–decay is restricted within the mass range 284 A 375 and thus being the dominant decay channel in this mass range and there is no possibility of –decay for the considered isotopic chain. In addition, we forecasted the α–decay chain of fission survival nuclides, i.e. and found as one α chain from and , chains from and consistently, chains from and consistently, chains from consistently, six consistent α chains from . A comparative study of SF and α-decay half-live computed using the formula of Santhosh et al and Coulomb proximity potential model (CPPM), respectively, for the fission surviving isotopic chain reveals that isotopes exhibit chains followed by SF, isotopes exhibit chains followed by SF, and the rest of the nuclei show continuous α chains. This study has also established that the alpha half-life values computed using (RMF) agree with half-life values computed using experimental values within 1 order difference. Thus, such studies can be of great significance to the experimentalists in very near future for synthesizing the isotopes of Z = 119 superheavy nuclei.Note:
- 14 pages, 6 figures. arXiv admin note: text overlap with arXiv:1611.00232, arXiv:1704.03156
References(114)
Figures(7)
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