Effects of Various Deformation on the First Fission Barrier in Even-
                    <i>A N</i>
                    = 152 Isotones

Chai, Qing-Zhen; Zhao, Weijuan; Wang, Hualei

doi:10.1088/0253-6102/71/1/67

Cited by 7 publications

(6 citation statements)

References 49 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…[88,413] for two recent reviews and to Refs. [410][411][412][414][415][416][417][418][419][420][421][422][423][424][425][426][427][428][429][430] for more recent progress. The multidimensionally-constrained (MDC) CEDF models have been developed to calculate and study PES for SHN and heavy nuclei [138,405,407,431].…”

Section: Fission Barriersmentioning

confidence: 99%

Self-consistent methods for structure and production of heavy and superheavy nuclei

et al. 2021

View full text Add to dashboard Cite

Self-consistent methods for the structure of heavy and superheavy nuclei are reviewed. The construction and application of energy-density functionals are discussed. The relationship between the self-consistent methods and microscopic-macroscopic approaches is considered on the mean-field level. The extraction of single-particle potentials from the energy-density functional is described. The isotopic dependence of nucleon distributions and its influence on the nucleus-nucleus interaction is analyzed. As a new additional condition we introduce that the energy-density functional must describe the heights of the Coulomb barriers in nucleusnucleus interaction potentials, thus imposing constraints on the properties of the functional at low matter densities. The self-consistent methods are applied to describe the quasiparticle structure, cluster radioactivity, and fission of the heaviest nuclei. These methods are used to predict the probabilities of β-delayed multi-neutron emission and half-lives of β-decays and electron captures in heavy and superheavy nuclei. The predicted properties of superheavy nuclei are used to estimate the production cross-sections of superheavy nuclei in complete fusion reactions. Contents

show abstract

Section: Fission Barriersmentioning

confidence: 99%

Self-consistent methods for structure and production of heavy and superheavy nuclei

et al. 2021

View full text Add to dashboard Cite

show abstract

“…With increasing rotational frequency, the triaxiality and Coriolis forces have a similar reduction behavior on the fission barrier, showing that the microscopic shell correction dominates evolution. We also systematically studied the effects of specific β 2 , γ, and β 4 deformation on the fission barrier in even-even N = 152 isotones [39]. By including triaxiality, the fission barrier will pull down more significantly in comparison to the calculation with hexadecapole deformation.…”

Section: Introductionmentioning

confidence: 99%

Effects of triaxial deformation on the fission barrier in the Z = 118 − 120 nuclei*

Chai 柴,

Wang 王,

Liu 刘

2024

Commun. Theor. Phys.

View full text Add to dashboard Cite

Within the framework of the macroscopic-microscopic model by using potential energy surface (PES) calculations in the three-dimensional space ($\beta_2$, $\gamma$, $\beta_4$), the fission trajectory and fission barrier for $Z=118$(Og), $119, 120$ nuclei have been systematically investigated. The calculated PES includes macroscopic liquid-drop energy, microscopic shell correction and pairing correction. Taking the $^{294}$Og$_{176}$ nucleus as an example, we discuss the next closed shell after $Z=82$ and $N=126$ with the calculated Woods-Saxon single-particle levels. Then, the results of PES in $^{294}$Og is illustrated from the (X, Y) scale to the ($\beta_2$, $\gamma$) scale. The $\gamma$ degree of freedom reveals the shape evolution clearly during the fission process. The structure near the minimum and saddle point of PES in the $Z=118, 119, 120$ nuclei are demonstrated simultaneously. Based on the potential energy curves, general trends of the evolution of the fission barrier heights and widths are also studied. The triaxial deformation in these superheavy mass regions plays a vital role in the first fission barrier, showing a significant reduction in both triaxial paths. In addition, the model-dependent fission barriers of proton-rich nuclei $^{295}$Og, $^{296$119 and $^{297}$120 are analyzed briefly. Our studies could be valuable for synthesizing the superheavy new elements in the forthcoming High Intensity Heavy-ion Accelerator Facility (HAIF) and other facilities.

show abstract

“…In Ref. [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.…”

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

View full text Add to dashboard Cite

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.

show abstract

Effects of Various Deformation on the First Fission Barrier in Even- A N = 152 Isotones

Cited by 7 publications

References 49 publications

Self-consistent methods for structure and production of heavy and superheavy nuclei

Self-consistent methods for structure and production of heavy and superheavy nuclei

Effects of triaxial deformation on the fission barrier in the Z = 118 − 120 nuclei*

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

Contact Info

Product

Resources

About