Rotational properties in even-even superheavy
                    <sup>254–258</sup>
                    Rf nuclei based on total-Routhian-surface calculations

Wang, Hualei; Chai, Qing-Zhen; Jin-Ge, Jiang; Liu, Minliang

doi:10.1088/1674-1137/38/7/074101

Cited by 11 publications

(8 citation statements)

References 62 publications

(91 reference statements)

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“…These properties are partly supported by the available experimental data [16-21, 37, 38]. In addition, as described in 252,254 No [42] and 256 Rf [43], it is interesting to find that the alignments of proton and neutron pairs are strongly competitive and take place almost simultaneously in 144 68 Er 76 where only one excited state is observed nowadays [15].…”

Section: Resultsmentioning

confidence: 67%

Total Routhian surface calculations of triaxial or γ-soft properties in even- A N = 76 isotones with 54 ≤ Z ≤ 68

et al. 2015

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Total Routhian surface (TRS) calculations for even-even N = 76 isotones with 54 Z 68 have been performed in three-dimensional (β2,γ,β4) deformation space. Calculated results of the equilibrium deformations are presented and compared with other theoretical predictions and available experimental data. The behavior of collective angular momentum shows the neutron rotation-alignment is preferred in the lighter N = 76 isotones, while for the heavier ones the proton alignment is favored. Moreover, multi-pair nucleon alignments and their competition (e.g., in 144 Er) are predicted. It is pointed out that these nuclei in the N =76 isotonic chain exhibit triaxiality or γ softness in high-spin states as well as ground states. Based on deformation-energy curves with respect to axial and non-axial quadrupole deformations, the shape instabilities are evaluated in detail and predicted, particularly in γ direction. Such instabilities are also supported by the odd-and even-spin level staggering of the observed γ bands, which is usually used to distinguish between γ-rigid and γ-soft asymmetry.

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Section: Resultsmentioning

confidence: 67%

Total Routhian surface calculations of triaxial or γ-soft properties in even- A N = 76 isotones with 54 ≤ Z ≤ 68

et al. 2015

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“…Ref. [38]. Along the curve, the ground-state or yrast configuration for the nucleus may be rather different (see, e.g., Fig.…”

Section: Resultsmentioning

confidence: 99%

“…[36], we investigated the effects of various deformations (e.g., β 2 , γ and β 4 ) on the first barrier in even-even nuclei with N = 152 and 94 ≤ Z ≤ 108. In addition, we studied the collective rotational effects including the α-decay-chain nuclei (from 216 Po and 272 Cn) [37] and 254−258 Rf [38] by the similar calculation. The primary purpose of this study is to investigate the effects of different deformation parameters, especially the axial and non-axial hexadepole deformations, on the fission path of 256 Sg by analyzing the topography of the energy surfaces calculated in a reasonable subspace of collective coordinates (it is impossible to calculate in the full deformation space).…”

Section: Introductionmentioning

confidence: 99%

Probing the structural evolution along the fission path in the superheavy nucleus $^{256}$Sg

Li¹,

Wang²,

Zhang³

et al. 2023

Preprint

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The evolution of structure property along the fission path in the superheavy nucleus 256 Sg is predicted through the multi-dimensional potential-energy(or Routhian)-surface calculations, in which the phenomenological deformed Woods-Saxon potential is adopted. Calculated nuclear deformations and fission barriers for 256 106 Sg 150 and its neighbors, e.g., 258,260 Sg, 254 Rf and 252 No are presented and compared with other theoretical results. A series of energy maps and curves are provided and used to evaluate the corresponding shape-instability properties, especially in the directions of triaxial γ and different hexadecapole deformations (e.g., α 40 , α 42 and α 44 ). It is found that the triaxial deformation may help the nucleus bypass the first fission-barrier of the axial case. After the first minimum in the nuclear energy surface, the fission pathway of the nucleus can be affected by γ and hexadecapole deformation degrees of freedom. In addition, microscopic single-particle structure, pairing and Coriolis effects are briefly investigated and discussed.

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“…α 40 , α 42 and α 44 ) on nuclear structure in the A = 230 nuclear region, where the large hexadecapole deformation island was identified both theoretically and experimentally [16,28]. Prior to the present study, we have investigated axial quadrupole and octupole deformations, triaxial deformation, and the corresponding stiffness in some nuclei [29][30][31][32][33][34][35] using potential-energy-surface and total-Routhian-surface calculations, which to a large extent help us to convince ourselves of the validity and correctness of our work.…”

Section: Introductionmentioning

confidence: 93%

Probes of axial and nonaxial hexadecapole deformation effects in nuclei around ²³⁰U

Song¹,

Wang²,

Zhang³

et al. 2023

Commun. Theor. Phys.

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The structure properties for even-even nuclei around 230U, locating on the hexadecapole-deformation island, are investigated by using the potential-energy-surface calculation within the framework of macroscopic-microscopic model. The impact of different deformation degrees of freedom (including axial and nonaxial quadrupole and hexadecapole deformations) on total energy, shell and pairing contributions is analyzed based on the projected energy-maps and -curves. The single-particle structure is presented and briefly discussed. To a large extent, much better agreement with experiment data and other theoretical results was obtained if the hexadecapole deformations, especially the axial one, were taken into account. Present results could provide useful keys to understand the effects of different quadrupole and hexadecapole deformations. Considering the least energy principle, the more reasonable deformation subspace is suggested to simultaneously include the octupole correlation.

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Rotational properties in even-even superheavy ^254–258 Rf nuclei based on total-Routhian-surface calculations

Cited by 11 publications

References 62 publications

Total Routhian surface calculations of triaxial or γ-soft properties in even- A N = 76 isotones with 54 ≤ Z ≤ 68

Total Routhian surface calculations of triaxial or γ-soft properties in even- A N = 76 isotones with 54 ≤ Z ≤ 68

Probing the structural evolution along the fission path in the superheavy nucleus $^{256}$Sg

Probes of axial and nonaxial hexadecapole deformation effects in nuclei around ²³⁰U

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Rotational properties in even-even superheavy 254–258 Rf nuclei based on total-Routhian-surface calculations

Cited by 11 publications

References 62 publications

Total Routhian surface calculations of triaxial or γ-soft properties in even- A N = 76 isotones with 54 ≤ Z ≤ 68

Total Routhian surface calculations of triaxial or γ-soft properties in even- A N = 76 isotones with 54 ≤ Z ≤ 68

Probing the structural evolution along the fission path in the superheavy nucleus $^{256}$Sg

Probes of axial and nonaxial hexadecapole deformation effects in nuclei around 230U

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Product

Resources

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Rotational properties in even-even superheavy ^254–258 Rf nuclei based on total-Routhian-surface calculations

Probes of axial and nonaxial hexadecapole deformation effects in nuclei around ²³⁰U