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

Hassanzad, M.; Ghodsi, O. N.

doi:10.1088/1674-1137/ac28f3

Cited by 5 publications

(4 citation statements)

References 60 publications

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“…For and , the deformation around the region with and may result in large deviations for these two nuclei [78,88,89]. For , , , and in these excited state, the corresponding experimental data may have Table 1.…”

Section: Resultsmentioning

confidence: 99%

“…Theoretically, multiple models have been proposed to study α decay, including effective liquid drop model [38,39], fission-like model [52], generalized liquid drop model (GLDM) [48,49], density dependent M3Y (DDM3Y) effective interaction [43,44], and several others [58][59][60][61]. Furthermore, many empirical formulas have been adopted to investigate α decay based on the Geiger-Nuttall (G-N) law and/or the quantum tunneling effect [67], such as the universal decay law (UDL) [68,69], Viola-Seaborg-Sobiczewski (VSS) formula [70], Royer formula [45], Hatsukawa formula [71], Deng-Zhang-Royer formula (DUR) [72], Sobiczewski-Parkhomenko (SP) formula [73], and so forth [74][75][76][77][78][79][80][81][82]. In 2020, Bayrak proposed a phenomenological harmonic oscillator potential model (HOPM) [83] based on the Wentzel-Kramers-Brillouin (WKB) method and Bohr-Sommerfeld quantization condition.…”

Section: Cfmentioning

confidence: 99%

“…Under this condition, this effect must be considered for unfavored α decay. Generally, two methods can be used to solve this problem: directly adding the terms of orbital angular momentum [61,72,78] or [74] to the corresponding models or empirical formulas. In this paper, if , the wave number under integration can not be determined using analytical solutions in the HOPM framework, then Eqs.…”

Section: Theoretical Framework a α Decay Half-lifementioning

confidence: 99%

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An improved simple model for α decay half-lives*

Zhu 朱,

Luo 骆,

Gao 高

et al. 2024

Chinese Phys. C

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In the present work, taking the α particle preformation probabilities Pα from Xu et al. [Xu and Ren, Nucl. Phys. A 760,303, 2005], which were extracted by fitting the experimental half-lives of α decay, based on a phenomenological harmonic oscillator potential model (HOPM) [Bayrak, J Phys G 47:025102, 2020], refitting 178 α decay half-lives of even-even nuclei taken from the latest nuclear property table NUBASE2020, we obtain the only one adjustable parameter V0 = 162.6MeV in HOPM i.e. the depth of nuclear potential, while the corresponding root-mean-square(rms) deviation is σ = 0.322. Furthermore, for considering the contribution of centrifugal potential to unfavored α decay half-lives, adding a new term d(l(l+ 1))^0.5 (d and l are the adjustable parameter and orbital angular momentum taken away by emitted α particle) to the logarithmic form of favored α decay half-lives under the HOPM framework, we propose an improved simple model (ISM) for calculating favored and unfavored α decay half-lives. Fitting the experimental half-lives of 205 unfavored α decay, we obtain d = 0.381. Usingthe improved simple model, the unfavored α decay half-lives of 128 odd-A and 77 odd-odd nuclei are calculated, the results are improved by 54.2% and 53.6%, respectively, compared with HOPM. In addition, we extend ISM to predict the α decay half-lives of 144 nuclei with Z = 117,118,119 and 120. For comparison, the improved model with eight parameters (DUR) proposed by Deng et al. [Deng, Phys. Rev. C 101: 034307, 2020] and the modified universal decay law (MUDL) put forward by Soylu et al. [Soylu, Nucl. Phys. A 1013: 122221, 2021] are also used. The predictions of these models and/or formulas are basically consistent with each other.

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Section: Resultsmentioning

confidence: 99%

Section: Cfmentioning

confidence: 99%

Section: Theoretical Framework a α Decay Half-lifementioning

confidence: 99%

See 1 more Smart Citation

An improved simple model for α decay half-lives*

Zhu 朱,

Luo 骆,

Gao 高

et al. 2024

Chinese Phys. C

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“…Some research shows that the deformation has a certain influence on the calculation of α decay half-lives [46,47,51]. Recently, Hassanzad et al [52] systematically studied the favored α decay half-lives of deformed nuclei with 93 Z 118 using deformed Coulomb and proximity potential model. Their results indicated that the deformation has a certain effect on α decay half-lives.…”

Section: Introductionmentioning

confidence: 99%

Systematic study of α decay half-lives for even–even nuclei within a deformed two-potential approach

Gui¹,

Li²,

Wu³

et al. 2022

Commun. Theor. Phys.

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In this work, we systematically study the α decay half-lives of 196 even-even nuclei using a two-potential approach improved by considering nuclear deformation. The results show that the accuracy of this model has been improved after considering nuclear deformation. In addition, we extend this model to predict the α decay half-lives of Z=118 and 120 isotopes by inputting the α decay energies extracted from the Weizsacker-Skyrme-type(WS-type) mass model, a simple nuclear mass formula(SNMF), relativistic continuum Hartree-Bogoliubov(RCHB) theory and Duflo-Zuker-19(DZ19)mass model. It is useful for identifying the new superheavy elements or isotopes for future experiments. Finally, the predicted α decay energies and half-lives of Z = 118 and 120 isotopes are analyzed, and the shell structure of superheavy nuclei is discussed. It shows that the shell effect is obvious at N = 184, while the shell effect at N = 178 depends on the nuclear mass model.

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