Alpha decay calculations with a new formula

Akrawy, Dashty T.; Poenaru, D. N.

doi:10.1088/1361-6471/aa8527

Cited by 106 publications

(48 citation statements)

References 53 publications

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“…Here we present a systematic study of the decay properties of superheavy nuclei and probe the competition between α-decay and spontaneous fission (SF) by calculating the α-decay half-lives and spontaneous fission half-lives of Z = 121 isotopes with A = 293 -380 using RMF+BCS and NSM approaches with various formulas given in the Refs. [77,78,79,80,81,82,83]. In order to compare and validate our results, we also compute Q-values and log 10 T α for the decay chains of superheavy nuclei 294 117 and 293 117 which have already been synthesized and their α-decay chains have been reported [4].…”

Section: Decay Modes Of 293−312 121mentioning

confidence: 99%

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Distinct ground state features and the decay chains of Z = 121 superheavy nuclei

Saxena

Singh

Kumawat

et al. 2018

Int. J. Mod. Phys. E

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A fully systematic study of even and odd isotopes (281 ≤ A ≤ 380) of Z = 121 superheavy nuclei is presented in theoretical frameworks of Relativistic mean-field plus state dependent BCS approach and Macroscopic-Microscopic approach with triaxially deformed Nilson Strutinsky prescription. The ground state properties namely shell correction, binding energy, two-and one-proton and neutron separation energy, shape, deformation, density profile and the radius are estimated that show strong evidences for magicity in N = 164, 228. Central depletion in the charge density due to large repulsive Coulomb field indicating bubble like structure is reported. A comprehensive analysis for the possible decay modes specifically α-decay and spontaneous fission (SF) is presented and the probable α-decay chains are evaluated. Results are compared with FRDM calculations and the available experimental data which show excellent agreement.

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Section: Decay Modes Of 293−312 121mentioning

confidence: 99%

“…A. Brown (Brown) [78], Sobiczewski et al [79], universal decay law (UDL) [80], unified formula (NRDX) [81], modified Royer formula given by Akrawy et al [82] and formula of Xu et al for spontaneous fission [83].…”

Section: Acknowledgementmentioning

confidence: 99%

Distinct ground state features and the decay chains of Z = 121 superheavy nuclei

Saxena

Singh

Kumawat

et al. 2018

Int. J. Mod. Phys. E

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“…Poenaru et al modified semi-empirical formula for α-decay half-life which is based on fission theory for α-decay yield which is given as [15,30] …”

Section: Semi-empirical Formula For Poenaru Et Al (Semfis)mentioning

confidence: 99%

Theoretical Studies on the α-decay Half-Lives of Even-Even Lv Isotopes

Akrawy¹

2017

IJEPE

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Abstract:The α-decay half-lives for even-even Lv isotopes within the range 290 ≤ A ≥ 314 which have Z = 116, have been evaluated using Gamow-like model (GLM) which is based on Gamow theory, the different semi-empirical formula for α-decay half-lives also was used. The half-lives were evaluated using theoretical Q-value. The computed α-decay half-lives were compared with CPPM, and also with empirical formula, the result was achieved in a good agreement.

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“…In fact, it can offer information about the nuclear structure, the nuclear levels and the properties of nuclei. In the last hundred years a lot of experimental and theoretical studies have been performed and the knowledge of the nuclear arXiv:1908.11458v1 [nucl-ex] 29 Aug 2019 matter becomes more and more determined. In particular, the first two processes ever studied were α and β decays (actually, the generic word β decay consists of β − , β + and electron capture, ε).…”

Section: Introductionmentioning

confidence: 99%

Experimental searches for rare alpha and beta decays

et al. 2019

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The current status of the experimental searches for rare alpha and beta decays is reviewed. Several interesting observations of alpha and beta decays, previously unseen due to their large half-lives (10 15 − 10 20 yr), have been achieved during the last years thanks to the improvements in the experimental techniques and to the underground locations of experiments that allows to suppress backgrounds. In particular, the list includes first observations of alpha decays of 151 Eu, 180 W (both to the ground state of the daughter nuclei), 190 Pt (to excited state of the daughter nucleus), 209 Bi (to the ground and excited states of the daughter nucleus). The isotope 209 Bi has the longest known half-life of T 1/2 ≈ 10 19 yr relatively to alpha decay. The beta decay of 115 In to the first excited state of 115 Sn (Eexc = 497.334 keV), recently observed for the first time, has the Q β value of only (147 ± 10) eV, which is the lowest Q β value known to-date. Searches and investigations of other rare alpha and beta decays ( 48 Ca, 50 V, 96 Zr, 113 Cd, 123 Te, 178m2 Hf, 180m Ta and others) are also discussed.

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Alpha decay calculations with a new formula

Cited by 106 publications

References 53 publications

Distinct ground state features and the decay chains of Z = 121 superheavy nuclei

Distinct ground state features and the decay chains of Z = 121 superheavy nuclei

Theoretical Studies on the α-decay Half-Lives of Even-Even Lv Isotopes

Experimental searches for rare alpha and beta decays

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