Additional hindrance of unfavored 
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 decay between states of different parity

Seif, W. M.; Adel, A.

doi:10.1103/physrevc.99.044311

Cited by 25 publications

(9 citation statements)

References 65 publications

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“…An increase in kinetic energy acts as a repulsive force in the dinuclear system that prevents the unexpected increase of the density overlapping at interior regions. Despite the well-illustrated overlapping effect in the density functional theory (DF T ) [39,40], the effect of Pauli blocking is not well embedded in the DF formalism. For achieving such prevention, a repulsive force can be simulated in the DF formalism due to the PEP, which plays a similar role as like as the kinetic energy contribution in the DFT.…”

Section: Introductionmentioning

confidence: 99%

“…Therefore, the interior regions of the interaction potentials between alpha and daughter nuclei would be affected by the PEP, where the tunnelling process occurs. One of the possible mechanism that is extensively being used for simultaneously applying the PEP and clusterization state in the dinuclear system is the renormalizing the strength of effective NN interaction due to the Bohr-Sommerfeld (BS) quantization condition [2,3,39,[43][44][45][46]. This procedure compensates for the deficiency of the PEP in the DF formalism to some extent.…”

Section: Introductionmentioning

confidence: 99%

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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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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Influence of the Pauli exclusion principle on the alpha decay

Amiri,

Ghodsi

2022

Preprint

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“…The ↵ emission is usually explained as the formation of a cluster on the surface of the daughter nucleus followed by a penetrability of an external barrier at an energy close to the Q-value [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15]. The probability to form such a combination is given by a square overlap of the convolution of the wave functions of the parent nucleus and that of the system at the touching configuration.…”

Section: Introductionmentioning

confidence: 99%

Microscopic description of α-decay as super-asymmetric fission

Mirea

2021

EPJ Web Conf.

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The fine structure of α-decay is treated with fission-like models. The single particle levels are calculated along a least action path connecting the ground state of the parent nucleus and the configuration of two spherical tangent nuclei. The probabilities to find different seniority-1 configurations are obtaining by solving the time-dependent pairing equations generalized by including the Landau-Zener effect and the Coriolis coupling. The theoretical results for the α-decay of 211Po and 211Bi are compared with experimental data showing a good agreement.

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“…Nuclei have many excited states that α-decay can occur from the ground state or isomeric state of the parent nucleus to the ground state or isomeric state of the daughter nucleus; Here we consider those which decay from the ground state to the ground state or isomeric state with the same spin and parity which their minimum angular momentum transition is equal to zero, called favored α-decays [48,49]. The main objective of the current paper is to take the deformation of daughter nuclei in the favored α-decay process under consideration.…”

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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Additional hindrance of unfavored α decay between states of different parity

Cited by 25 publications

References 65 publications

Influence of the Pauli exclusion principle on the alpha decay

Influence of the Pauli exclusion principle on the alpha decay

Microscopic description of α-decay as super-asymmetric fission

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

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