α-decay systematics for superheavy nuclei

Akrawy, Dashty T.; Ahmed, Ali H.

doi:10.1103/physrevc.100.044618

Cited by 38 publications

(26 citation statements)

References 40 publications

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“…x i is the i th reading of data set, υ is the mean of the data set. We found that NMHF has minimum RMSE (0.56) and uncertainties (±0.09 s) as tested it on 40 experimental data within the range 111≤Z≤118 and 161≤N≤192 while compared to other similar, latest fitted and known formulas such as Royer2020 [92], MYQZR2019 [91], Akrawy2018 [93], Modified RenB2019 [89], MRF2018 [95], DK2018 [95], Modified Budaca Formula (MBuF2022) [37], UF2022 [96], IUF2022 [97], ISEF2022 [98], new modified Sobiczewski formula (NMSF2021) [38] and new modified Manjunatha formula (NMMF2021) [38]. Consequently, the present calculations of α-decay half-lives are performed by using NMHF [38] which incorporates the terms related to (i) angular momentum taken away by the α-particle and (ii) asymmetry of the parent nucleus.…”

Section: α-Decaymentioning

confidence: 99%

“…For the selection of α-decay half-lives formula, we have tested few recently fitted/modified empirical/semiempirical formulas [25,34,37,38,60,[89][90][91][92][93][94][95][96][97][98] and the comparison among these formulas is shown in Table 1. For the comparison, we use root mean square error (RMSE) and uncertainty (u), which are calculated by using the following formulas:…”

Section: α-Decaymentioning

confidence: 99%

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History of Department of Neurology at S.M.S. Medical College, Jaipur

Jain

2020

Neurol India

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A comprehensive study of favoured and unfavoured α-decay, cluster decay, weak-decay along with spontaneous fission in undetected superheavy nuclei within the range for proton number 111≤Z≤118 and neutron number 161≤N≤192 is performed. Half-lives for various mentioned decays are estimated with good accuracy on the basis of NUBASE2020 and are found in excellent match with the known half-lives. α-decay mode is found most probable in this wide range and correspondingly potential α-decay chains are reckoned. Peculiarly, the chances of cluster emission, as well as weak-decay, are also anticipated in this region of the periodic chart which open new pathways of detection of superheavy nuclei.

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Section: α-Decaymentioning

confidence: 99%

Section: α-Decaymentioning

confidence: 99%

History of Department of Neurology at S.M.S. Medical College, Jaipur

Jain

2020

Neurol India

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“…Over the past decades, the α decay process has attracted much interest toward investigating the decay and fusion mechanisms of heavy and superheavy nuclei [1][2][3][4][5][6][7][8][9][10][11][12][13]. Various approaches have been adopted to investigate the properties of the α decay processes [14][15][16][17][18][19].…”

Section: Introductionmentioning

confidence: 99%

Influence of the Pauli exclusion principle on the alpha decay

Amiri,

Ghodsi

2022

Preprint

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In this study, the effects of repulsive nucleon-nucleon interactions arising from the Pauli exclusion principle were examined regarding the half-lives of heavy even-even nuclei with 84 ≤ Z ≤ 92. The Pauli exclusion principle is applied to our investigations by renormalizing the nucleon-nucleon interactions according to the Bohr-Sommerfeld quantization condition. It is also applied to the double-folding (DF ) formalism as a modification term by investigating the kinetic energy variation at the overlapping regions between the densities of the alpha and daughter nuclei. The standard deviation for the calculated half-lives from their corresponded experimental data is 0.340 for the renormalized DF formalism. Its value reduces to 0.309 for the DF formalism modified with the kinetic energy contribution estimated by the extended Thomas-Fermi approach. The calculated α decay half-lives are more consistent with experimental data if the kinetic energy contribution is being associated with the DF formalism.

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“…Many studies have been done in this region within different models that use α-decay half-lives [13][14][15][16][17][18][19][20][21][22][23] to achieve information related to nuclear shell structure. Also, researchers have investigated the island of stability through empirical formulas [24][25][26].…”

Section: Introductionmentioning

confidence: 99%

α -decay properties of even-even superheavy nuclei

Ghodsi

Hassanzad

2020

Phys. Rev. C

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In this paper, we have calculated the α-decay half-lives of superheavy nuclei with 106 ≤ Z ≤ 126 and a neutron number of 150 ≤ N ≤ 200 within proximity potentials and deformed-spherical Coulomb potentials by using W S4 α-decay energy and the semi-classical Wentzel-Kramers-Brillouin approximation for penetration probability. Besides, we have included the preformation factor within the cluster-formation model. We have investigated magic numbers and submagic numbers in the mentioned region; with high probability 162, 178, and 184 are predicted as neutron magic numbers. We also have confirmed that there is good agreement between our predicted half-lives and the ones obtained from semiempirical relationships such as Royer, VSS, UDL, and SemFIS2.

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α-decay systematics for superheavy nuclei

Cited by 38 publications

References 40 publications

History of Department of Neurology at S.M.S. Medical College, Jaipur

History of Department of Neurology at S.M.S. Medical College, Jaipur

Influence of the Pauli exclusion principle on the alpha decay

α -decay properties of even-even superheavy nuclei

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