Neutron Drip Line for Nuclei in the Vicinity of the Neutron Magic Number N = 184

Tarasov, V. N.; Kuprikov, V. I.; Tarasov, D. V.

doi:10.1134/s1063778819060115

Cited by 2 publications

(1 citation statement)

References 22 publications

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“…The magicity of the parent nucleus is indicated by a high half-life, while that of the daughter nucleus by a low half-life [7]. The theories therefore predict that N = 184 is a magic number, and this is consistent with the conclusion of [55][56][57].…”

Section: Resultssupporting

confidence: 58%

Predictions of the alpha-decay half-lives of even–even superheavy nuclei using modified Gamow-like model

Azeez¹,

Yahya²,

Saeed³

2022

Phys. Scr.

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α-decay half-lives of superheavy nuclei have been studied using modified Gamow-like model and improved empirical formulas. The empirical formulas used in the study are Viola-Seaborg semi-empirical formula, universal decay law (UDL), Denisov-Khudenko formula (DK), Royer formula, Wang formula, AKRE formula, and new Ren B (NRB) formula. New values of the adjustable parameters in the modified Gamow-like model have been obtained using a least square fit scheme and input data from the NUBASE2020 database. We found that only two adjustable parameters are sufficient to describe the α-decay half-lives of heavy and superheavy nuclei. We also obtained new coefficients for the seven empirical formulas using similar procedure. The modified Gamow-like model (MGLM) and improved empirical formulas are then used to calculate the α-decay half-lives of measured superheavy nuclei with Z = 100 − 118. The calculated root mean square errors indicate that the Royer, DK, and AKRE formulas are the best three empirical formulas for evaluating the α-decay half-lives of the superheavy nuclei. The five best performing empirical formulas, together with the MGLM, are then used to predict alpha-decay half-lives of unmeasured even-even superheavy nuclei with Z = 120 − 126. The Q α values used for the predictions have been taken from the tabulated Weizsäcker-Skyrme-4+RBF (WS4+RBF) Qα values. The theoretical calculations suggest that N = 184 is a possible magic number, which is in agreement with previous theoretical calculations.

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