| Autor: |
Rather, Asloob A., Ikram, M., Rather, Ishfaq A., Imran, M., Usmani, A. A., Kumar, Bharat, Santhosh, K. P., Patra, S. K. |
| Zdroj: |
European Physical Journal Plus; May2023, Vol. 138 Issue 5, p1-26, 26p |
| Abstrakt: |
Within the axially deformed relativistic mean field with NL3 ∗ 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, β -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 β –decay for the considered isotopic chain. In addition, we forecasted the α–decay chain of fission survival nuclides, i.e. 284 - 296 119 and found as one α chain from 284 119 and 296 119 , 2 α chains from 285 119 and 295 119 consistently, 3 α chains from 286 119 and 294 119 consistently, 4 α chains from 287 119 consistently, six consistent α chains from 288 - 293 119 . 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 288 - 293 119 exhibit 6 α chains followed by SF, isotopes 295 , 296 119 exhibit 4 α 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 Q α (RMF) agree with half-life values computed using experimental Q α 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. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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