Preformation of clusters in heavy nuclei and cluster radioactivity

Zhang, H. F.; Dong, J. M.; Royer, G.; Zuo, Wei; Li, J. Q.

doi:10.1103/physrevc.80.037307

Cited by 63 publications

(55 citation statements)

References 28 publications

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“…The most probable clusters in this region are found to be α-like 8 Be, 12 C and 16 O. Also, these calculations are in good support to the previously observed shell effects in cluster radioactivity 9,13,39,40,46 and are in agreement with the existing magic numbers. The effect of shape and quadrupole deformation β 2 of parent nuclei on the decay rate is studied by estimating the half-lives of the above nuclei, with and without quadrupole deformation.…”

Section: Resultssupporting

confidence: 89%

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Role of shape and quadrupole deformation of parents in the cluster emission of rare earth nuclei

Girija¹,

Joseph

2014

Int. J. Mod. Phys. E

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The nuclear structure effects on α decay and cluster emission are investigated in the case of even-even rare earth nuclei 150-160 Dy, [150][151][152][153][154][155][156][157][158][159][160][150][151][152][153][154][155][156][157][158][159][160] 158,162,[166][167][168][169][170][171][172][173][174][175][176] 160,[164][165][166][167][168][169][170][171][172][173][174][175][176][177][178]166,[170][171][172][173][174][175][176][177][178][179][180] Os. The role of shape and deformation of parent nuclei in the decay rate is studied by taking the Coulomb and proximity potentials as the interacting barrier for the post scission configuration. The quadrupole deformation of parent nuclei causes a slight change in the half-life of α emissions, but it affects the rate of heavy cluster emissions significantly. Prolate deformation of parents enhances cluster emission, while an oblate deformation slows down the decay. Shape and deformation of parent nuclei causes change in the branching ratio also. A prolate deformation increases the branching ratio, whereas an oblate deformation reduces it. Highest branching ratio is predicted at N ∼ 90.

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Section: Resultssupporting

confidence: 89%

“…Moreover, the observed decays, where the parent and daughter nuclei have odd mass are less in number. 13 Stable deformed nuclei with β 2 < 0.3 are commonly found in the rare earth region. 14-16 Moreover, they exhibit some fascinating properties such as shape coexistence in the ground state, as well as at high spins.…”

Section: Introductionmentioning

confidence: 99%

Role of shape and quadrupole deformation of parents in the cluster emission of rare earth nuclei

Girija¹,

Joseph

2014

Int. J. Mod. Phys. E

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“…Similar to α decay and proton emission, cluster radioactivity, as another process triggered by the strong interaction, was predicted and then experimentally identified in the 1980s [5,6]. Like the traditional α-decay treatment, theoretical calculation of the half-lives of proton and cluster emissions can be generally divided as follows: phenomenological analysis [7][8][9][10], the semi-classical Wentzel-Kramers-Brillouin (WKB) approximation [11][12][13][14][15][16], and the microscopical solution of Schrödinger equations [17][18][19]. It is to be noted that these theoretical calculations show good agreement with the experimental half-lives of proton emission, α decay, or heavier cluster radioactivity.…”

Section: Introductionmentioning

confidence: 99%

Attempt to probe nuclear charge radii by cluster and proton emissions

Qian

Ren

2013

Phys. Rev. C

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We deduce the rms nuclear charge radii for ground states of light and medium-mass nuclei from experimental data of cluster radioactivity and proton emission in a unified framework. On the basis of the density-dependent cluster model, the calculated decay half-lives are obtained within the modified two-potential approach. The charge distribution of emitted clusters in the cluster decay and that of daughter nuclei in the proton emission are determined to correspondingly reproduce the experimental half-lives within the folding model. The obtained charge distribution is then employed to give the rms charge radius of the studied nuclei. Satisfactory agreement between theory and experiment is achieved for available experimental data, and the present results are found to be consistent with theoretical estimations. This study is expected to be helpful in the future detection of nuclear sizes, especially for these exotic nuclei near the proton dripline.

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“…Cluster emission from heavy nuclei is considered as a very asymmetric fission process in Refs. [1,6,12,14,19,22,24,29,38,41,42,47,50]. Cluster decay is treated in the framework of the cluster-preformation model in Refs.…”

Section: Introductionmentioning

confidence: 99%

The multidimensional model of cluster radioactivity

Denisov

2013

Preprint

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The macroscopic potential energy surface related to the interaction between the cluster and the residue nucleus is evaluated in the framework of the nonlocal 4 extended Thomas-Fermi approach with Skyrme and Coulomb forces. The shell-correction to the macroscopic potential energy is also taken into account. The dynamical surface deformations of both the cluster and the residue nucleus are taken into consideration at the barrier penetration path. The heights of saddle points related to deformed nuclear shapes are lower than the barrier height between the spherical cluster and residue nuclei; therefore the dynamical deformations of nuclei increase the barrier penetrability and reduce the half-life of cluster decay. The shell correction contribution into the potential energy between cluster and residue nucleus is important for both the potential landscape and the half-life evaluation. The experimental values of cluster decay half-lives are well reproduced in the model.

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Preformation of clusters in heavy nuclei and cluster radioactivity

Cited by 63 publications

References 28 publications

Role of shape and quadrupole deformation of parents in the cluster emission of rare earth nuclei

Role of shape and quadrupole deformation of parents in the cluster emission of rare earth nuclei

Attempt to probe nuclear charge radii by cluster and proton emissions

The multidimensional model of cluster radioactivity

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