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-decay properties of even-even superheavy nuclei

Ghodsi, O. N.; Hassanzad, M.

doi:10.1103/physrevc.101.034606

Cited by 28 publications

(14 citation statements)

References 62 publications

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“…Recently, Cui et al studied the 2p radioactivity of the ground state of nuclei based on a generalized liquid drop model (GLDM) [37], in which the 2p radioactivity process is described as a pair particle preformed near the surface of the parent nucleus penetrating the barrier between the cluster and daughter nucleus. In this view, 2p radioactivity shares the similar theory of barrier penetration with different kinds of charged particles' radioactivity, such as α decay, cluster radioactivity, proton radioactivity and so on [38][39][40][41][42][43]. In our previous work [44], based on the Geiger-Nuttall (G-N) law [45], we proposed a two-parameter empirical formula of new G-N law for studying proton radioactivity, which can be treated as an effective tool to study proton radioactivity.…”

Section: Introductionmentioning

confidence: 99%

New Geiger-Nuttall law for two-proton radioactivity *

Zou

Pan

et al. 2021

Chinese Phys. C

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In the present work, combining with the Geiger-Nuttall law, a two-parameter empirical formula is proposed to study the two-proton (2p) radioactivity. Using this formula, the calculated 2p radioactivity half-lives are in good agreement with the experimental data as well as the calculated ones obtained by Goncalves et al. ([Phys. Lett. B 774, 14 (2017)]) using the effective liquid drop model (ELDM), Sreeja et al. ([Eur. Phys. J. A 55, 33 (2019)]) using a four-parameter empirical formula and Cui et al. ([Phys. Rev. C 101: 014301 (2020)]) using a generalized liquid drop model (GLDM). In addition, this two-parameter empirical formula is extended to predict the half-lives of 22 possible 2p radioactivity candidates, whose the 2p radioactivity released energy Q2p>0, obtained from the latest evaluated atomic mass table AME2016. The predicted results have good consistency with ones using other theoretical models such as the ELDM, GLDM and four-parameter empirical formula.

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Section: Introductionmentioning

confidence: 99%

New Geiger-Nuttall law for two-proton radioactivity *

Zou

Pan

et al. 2021

Chinese Phys. C

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“…7 to 10, one can notice that the isotopes associated with the neutron numbers N = 162, 170, 174, 178, 182 and 184 have longer half-lives as compared to the other isotopes in the series, which further strengthen the predictions in Refs. [40,42,102]. Moreover, in Ref.…”

Section: Neutron Numbermentioning

confidence: 94%

Exploring the ground state bulk and decay properties of the nuclei in superheavy island

Jain,

Kumar,

Bhuyan

2022

Preprint

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The α-decay half-lives of 204 superheavy nuclei covering the range 114 ≤ Z ≤ 126 have been investigated using the relativistic mean-field model (RMF) for NL3 * parameter set. The ground state bulk properties such as binding energy, quadrupole deformation parameter (β 2 ), and root-mean-square charge radii for these nuclei are analyzed. Four different semi-empirical formulae, namely, the universal decay law (UDL), the Viola-Seaborg (VSS) formula, the modified universal decay law (MUDL), and the modified Brown formula (MBrown), are used to obtain the α-decay half-lives for the considered nuclei. To examine the applicability of relativistic mean-field model within NL3 * parametrization, the α-decay energies, and the half-lives of a few known superheavy nuclei within the range 102 ≤ Z ≤ 118 are calculated and the results are compared with the experimental data along with the theoretical predictions. The α-decay energies (Q-values) are estimated from the binding energies of the parent, and daughter from the RMF (NL3 * ) parameter set. The calculated results are compared with macroscopic-microscopic Finite-Range-Droplet-Model (FRDM), Global Nuclear Mass Model (WS3, WS4), Weizsacker-Skyrme mass model (WS * ) predictions, and the experimental data, wherever available. The possible standard deviations are also estimated for experimental and various theoretical predictions. We find a good consistency for the experimental-to-UDL, FRDM-to-UDL, and WS4-to-UDL estimates of the decay energy and corresponding half-life. The present analysis provides the theoretical predictions within the microscopic model for the upcoming experiments on the superheavy region.

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“…The proximity model is used to calculate the nuclear interaction energy between two nuclei by implying the surface energy. It is satisfactorily used in producing the nuclear potential between two nuclei while they are considered spherical [37,38,39,40]. This theory has been derived, in a more complicated way, for the nuclear interaction between deformed-deformed pairs of nuclei [41,42,43]; Also, one of the interacting nuclei can be spherical.…”

Section: Introductionmentioning

confidence: 99%

Theoretical study on favored alpha-decay half-lives of deformed nuclei

Hassanzad,

Ghodsi

2021

Preprint

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A systematic study on α-decay half-lives for the nuclei in the range 93 ≤ Z ≤ 118 is done by employing various versions of proximity potentials. To obtain the more reliable results, the deformation terms are included up to hexadecapole (β 4 ) in the spherical-deformed nuclear and Coulomb interaction potentials. The favored α-decays process in this region are categorized as the even-even, odd A, and odd-odd nuclei, first, and second they are grouped into two parts as a ground state to ground state and ground state to isomeric states transition. Due to their root-mean-square deviations (RMSD's) comparison, Bass77 and N go80 have the least values and better compromise in reproducing experimental data. Besides, by considering preformation probability within the cluster formation model, the results validate that the significant reduction in root-mean-square deviations has been obtained for different versions of proximity; Hence detract the deviation between calculated and experimental data.

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α -decay properties of even-even superheavy nuclei

Cited by 28 publications

References 62 publications

New Geiger-Nuttall law for two-proton radioactivity *

New Geiger-Nuttall law for two-proton radioactivity *

Exploring the ground state bulk and decay properties of the nuclei in superheavy island

Theoretical study on favored alpha-decay half-lives of deformed nuclei

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