Covariant density functional theory input for 
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-process simulations in actinides and superheavy nuclei: The ground state and fission properties

Taninah, A.; Agbemava, S. E.; Afanasjev, A. V.

doi:10.1103/physrevc.102.054330

Cited by 22 publications

(4 citation statements)

References 105 publications

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“…Studying the characteristics of Z = 120 nuclei has always been an interesting matter to discuss. The Og is considered to be the heaviest discovered element and a large number of predictions are reported about the shell closure at Z = 120 [19][20][21][22], where they have also mentioned about the corresponding neutron numbers N = 172 and 184 [10,[23][24][25]. These studies are done based on the factors like pairing energy, chemical potential energy, deformation parameter, single-particle spectra, and decay energies [26][27][28][29].…”

Section: Introductionmentioning

confidence: 99%

Isotopic shift in magic nuclei within relativistic mean-field formalism

et al. 2021

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The ground-state properties such as binding energy, root-mean-square radius, pairing energy, nucleons density distribution, symmetry energy, and single-particle energies are calculated for the isotopic chain of Ca, Sn, Pb, and Z = 120 nuclei. The recently developed G3 and IOPB-I forces along with the DD-ME1 and DD-ME2 sets are used in the analysis employing the relativistic mean-field approximation. To locate the magic numbers in the superheavy region and to explain the observed kink at neutron number N = 82 for Sn isotopes, a three-point formula is used to see the shift of the observable and other nuclear properties in the isotopic chain. Unlike the electronic configuration, due to strong spin-orbit interaction, the higher spin orbitals are occupied earlier than the lower spin, causing the possible kink at the neutron magic numbers. We find peaks at the known neutron magic number with the confirmation of sub-shell, shell closure respectively at N = 40, 184 for Ca and 304120.

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Section: Introductionmentioning

confidence: 99%

Isotopic shift in magic nuclei within relativistic mean-field formalism

et al. 2021

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“…Beyond the neutron drip line, the phenomenon of reentrant binding is predicted in microscopic calculations [11][12][13][14][15][16][17][18][19][20]. This phenomenon was indicated earlier in the calculations of light nuclei [11] and is now spread throughout the nuclear landscape on the neutron-rich side.…”

Section: Introductionmentioning

confidence: 74%

Possible existence of bound nuclei beyond neutron drip lines driven by deformation *

Wang

Zhang

et al. 2021

Chinese Phys. C

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Based on the relativistic calculations of the nuclear masses in the transfermium region from No to Ds using the deformed relativistic Hartree-Bogoliubov theory in continuum (DRHBc), the possible existence of bound nuclei beyond the neutron drip lines is studied. The two-neutron and multi-neutron emission bound nuclei beyond the primary neutron drip line of are predicted in , and isotopes. A detailed microscopic mechanism investigation reveals that nuclear deformation plays a vital role in the existence of bound nuclei beyond the drip line. Furthermore, not only the quadrupole deformation but also the higher orders of deformation are indispensable in the reliable description of the phenomenon of reentrant binding.

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“…In addition to the fundamental approaches [28,29], the R3Y nucleon-nucleon (NN) potential [30,31], which stems from the relativistic mean-field (RMF) Lagrangian using the NL parameter set, is employed in the present study, along with the phenomenological M3Y NN potential [32]. The RMF theory is apt for handling the ground and excited-state properties of the atomic nuclei [33][34][35]. The -values are also calculated from the RMF (NL ) and are compared with the macroscopic-microscopic WS3 [36] and those obtained from the experimental binding energy data [37].…”

Section: Introductionmentioning

confidence: 99%

Preformation probability and kinematics of cluster emission yielding Pb-daughters*

Majek¹,

Bhuyan

Anwar

et al. 2023

Chinese Phys. C

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In the present study, the newly established preformation formula is applied for the first time to study the kinematics of the cluster emission from various radioactive nuclei, especially those that decay to the double shell closure $^{208}$ the Pb nucleus and its neighbors as daughters. The recently proposed universal cluster preformation formula has been established based on the concepts that underscores the influence of the mass and charge asymmetry ($\eta_A$ and $\eta_Z$), cluster mass $A_c$ and the Q-value, paves the way to quantify the energy contribution during the preformation as well as the tunnelling process separately. The cluster-daughter interaction potential is obtained by folding the relativistic mean-field (RMF) densities with the recently developed microscopic R3Y using the NL$3^*$ and the phenomenological M3Y NN potentials to compare their adaptability. The penetration probabilities are calculated from the WKB approximation. With the inclusion of the new preformation probability $P_0$, the predicted half-lives of the R3Y and M3Y interactions are in good agreement with the experimental data. Furthermore, a careful inspection reflects slight differences in the decay half-lives, which arise from their respective barrier properties. The $P_0$ for systems with double magic shell closure $^{208}$Pb daughter are found to be relatively higher by an order of $\approx 10^2$ than those with neighbouring Pb daughter nuclei. By exploring the contributions of the decay energy, the recoil effect of the daughter nucleus is appraised, unlike several other conjectures. Thus, the centrality of the $Q-$value in the decay process is demonstrated and redefined within the preformed cluster-decay model. Besides, we have introduced a simple and intuitive set of criteria that governs the estimation of recoil energy in the cluster radioactivity.

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Covariant density functional theory input for r -process simulations in actinides and superheavy nuclei: The ground state and fission properties

Cited by 22 publications

References 105 publications

Isotopic shift in magic nuclei within relativistic mean-field formalism

Isotopic shift in magic nuclei within relativistic mean-field formalism

Possible existence of bound nuclei beyond neutron drip lines driven by deformation *

Preformation probability and kinematics of cluster emission yielding Pb-daughters*

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