Nuclear spin of odd-odd<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mi>α</mml:mi></mml:math>emitters based on the behavior of<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mi>α</mml:mi></mml:math>-particle preformation probability

Ismail, M.; Adel, A.; Botros, M. M.

doi:10.1103/physrevc.93.054618

Cited by 16 publications

(8 citation statements)

References 52 publications

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“…16,37 Great efforts have been done in the experiment and theory in this field, while the developments in heavy-ion beam technology have been also accelerating the experimental synthesis and theoretical research. [40][41][42] For SHN, α decay as a dominant decay mode can provides abun-May 11, 2020 0:26 WSPC/INSTRUCTION FILE main-˙IJMPE-D-19-00161R1…”

Section: Introductionmentioning

confidence: 99%

Predictions of α decay half-lives for even–even superheavy nuclei with 104 ≤ Z ≤ 128 based on two-potential approach within cluster-formation model

Deng

et al. 2019

Int. J. Mod. Phys. E

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In present work, we systematically study the α decay half-lives of 170 even-even nuclei with 60 Z 118 within the two-potential approach while the α decay preformation factor Pα is obtained by the cluster-formation model. The calculated results can well reproduce the experimental data. In addition, we extend this model to predict the α decay half-lives of 64 even-even nuclei with 104 Z 128 whose α decay is energetically allowed or observed but not yet quantified. For comparing, the two famous models i.e. SemFIS proposed by D. Poenaru et al. [Europhys. Lett. 77 (2007) 62001] and UDL proposed by C. Qi et al. [Phys. Rev. Lett. 103 (2009) 072501] are used. The predicted results of these models are basically consistent. At the same time, through analyzing the changing trend of α decay energy Qα of Z = 118, 120, 122, 124, 126 and 128 isotopes nuclei with the increasing of neutron number N and that of α decay preformation factor Pα of those isotopes even-even nuclei with the increasing of neutron number N, N = 178 may be a new neutron magic number.

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Section: Introductionmentioning

confidence: 99%

Predictions of α decay half-lives for even–even superheavy nuclei with 104 ≤ Z ≤ 128 based on two-potential approach within cluster-formation model

Deng

et al. 2019

Int. J. Mod. Phys. E

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“…The application of double-folding potentials for αdecay in a simple α+nucleus two-body model has been described in detail already in [2], and it has been applied and further developed in a series of α-decay studies in the last years (e.g., [17][18][19][20][21][22][23][24][25][26][27]). Here I briefly repeat the essential points.…”

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confidence: 99%

“…For completeness it should be noted that there is another method for an independent determination of Q α from the systematics of Q α differences of neighboring nuclei; unfortunately, the published values end at 295 118 and do not include 296 118 [16]. The application of double-folding potentials for α-decay in a simple α+nucleus two-body model has been described in detail already in [2], and it has been applied and further developed in a series of α-decay studies in the last years (e.g., [17][18][19][20][21][22][23][24][25][26][27]). Here I briefly repeat the essential points.…”

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confidence: 99%

α -decay properties of 118296 from double-folding potentials

Mohr

2017

Phys. Rev. C

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α-decay properties of the yet unknown nucleus 296 118 are predicted using the systematic behavior of parameters of α-nucleus double-folding potentials. The results are Qα = 11.655 ± 0.095 MeV and T 1/2 = 0.825 ms with an uncertainty of about a factor of 4.PACS numbers: 23.60.+e,27.90.+b,21.60.Gx Very recently, Sobiczewski [1] has analyzed the decay properties of the yet unknown nucleus 296 118 using a combination of Q α values from mass models and a phenomenological formula for the α-decay half-lives. This study was motivated by ongoing experiments which attempt to synthesize this heaviest nucleus to date. The present work uses a completely different approach which is based on the smooth and systematic bahavior of α-decay parameters using double-folding potentials [2].Sobiczewski Cn ("chain-2") where only the two latter α-decays are known from experiment. The selection of the mass formulae leads to a restricted range of Q α for 296 118 from 11.62 MeV (WS3+), 11.73 MeV (WS4+), and 12.06 MeV (HN), and the corresponding α-decay half-lives are 4.8 ms (WS3+), 2.7 ms (WS4+), and 0.50 ms (HN). This range of predictions of almost one order of magnitude for the α-decay half-life of 296 118 does not yet include an additional uncertainty of the phenomenological formula of [3] which is on average a factor of 1.34 for even-even nuclei and does not exceed a factor of 1.78 in most cases [3].In a further study Budaca et al. [9] have applied empirical fitting formulae for the prediction of the decay properties of 296 118. They obtain a slightly lower Q α = 11.45 MeV and half-lives of about 3 ms. A very low value of Q α = 10.185 MeV is derived from mass formulae in [10,11], leading to predicted half-lives up to minutes for 296 118. Half-lives of the order of 1 ms have been obtained in [12] using the WS4+ Q α and various empirical formulae for the half-life, and similar half-lives slightly below 1 ms were found very recently in [13, 14] * Email: WidmaierMohr@t-online.de; mohr@atomki.mta.hu which are also based on Q α from WS4+.For completeness it has to be mentioned that α-decay is the dominant decay mode of 296 118. Partial half-lives of 296 118 for spontaneous fission have been estimated in [1,15]; they exceed the α-decay half-life by several orders of magnitude.Contrary to the study of Sobiczewski and the other recent calculations for 296 118 [9][10][11][12], the present approach does not use mass models for the prediction of the unknown Q α of 296 118 which is the most important quantity for the prediction of its half-life. Instead, the smooth behavior of parameters is used which is obtained in calculations with systematic double-folding potentials [2]. This method is particularly well suited for the present case where the available experimental results for chain-1 and chain-2 have to be extrapolated only to a very close neighbor. For completeness it should be noted that there is another method for an independent determination of Q α from the systematics of Q α differences of neighboring nuclei; unfortunately, the publishe...

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“…We give here only a brief overview of the generalized version of the double-folding model and refer to [42] for more details. The double-folding model has been successfully used to generate the real part of the bare nucleus-nucleus optical potential [43][44][45][46][47][48]. This model uses the sudden approximation i.e., the assumption that the densities of the colliding nuclei are assumed to be unchanged at all distances during the collision.…”

Section: The Extended Double-folding Modelmentioning

confidence: 99%

The isovector nuclear density and improved description of cluster decay half-lives using isospin-dependentNNinteraction

Ismail

Adel

2017

J. Phys. G: Nucl. Part. Phys.

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The sensitivity of cluster-decay half-life time to the isospin effect of the nucleon-nucleon (NN) interaction and the neutron-skin thickness is explored in the framework of the Wentzel-Kramers-Brillouin approximation. Within the generalized double-folding model, the cluster-daughter potential is calculated in terms of the isoscalar and isovector parts using the explicit proton and neutron density distributions. Realistic density-dependent Michigan-three-Yukawa (CDM3Y1 and CDM3Y6) NN interactions with the finite-range exchange NN force are considered in the present work. The calculated clusterdecay half-lives including the isospin effect and the differences between neutron and proton density distributions are found to be in somewhat better agreement with the experimental data as compared without these effects. This may indicate the necessity of considering the isospin effect and the neutronproton differences of the density distributions in cluster-decay, especially for extremely neutron-rich nuclei. Predictions of cluster decay half-lives from possible cluster emitters are presented which may be helpful for future experiments. The present study could be a significant step forward in improving the description of cluster decay half-lives.

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Nuclear spin of odd-oddαemitters based on the behavior ofα-particle preformation probability

Cited by 16 publications

References 52 publications

Predictions of α decay half-lives for even–even superheavy nuclei with 104 ≤ Z ≤ 128 based on two-potential approach within cluster-formation model

Predictions of α decay half-lives for even–even superheavy nuclei with 104 ≤ Z ≤ 128 based on two-potential approach within cluster-formation model

α -decay properties of 118296 from double-folding potentials

The isovector nuclear density and improved description of cluster decay half-lives using isospin-dependentNNinteraction

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