Probable Decay Modes at Limits of Nuclear Stability of the Superheavy Nuclei

Bhuyan, M.

doi:10.1134/s1063778818010064

Cited by 19 publications

(9 citation statements)

References 57 publications

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“…(6), which is able to produce reasonable agreement with the experimental data [19]. Furthermore, these non-linear terms in the σ− field plays an important role in the nuclear matter study and the detailed nuclear structure inherited by the density while calculating the proton and cluster decay properties (mostly a surface phenomenon) [61,62].…”

Section: A Nucleus-nucleus Optical Potentialmentioning

confidence: 73%

“…Hence, one needs to apply the perspective of effective field theory (EFT) at low energy, known as quantum hadrodynamics (QHD) [53][54][55]. The mean field treatment of QHD has been used widely to describe the nuclear structure and infinite nuclear matter characteristics [53][54][55][56][57][58][59][60][61][62][63]. In the relativistic mean field approach, the nucleus is considered as a composite system of nucleons interacting through exchange of mesons and photons [54,[64][65][66][67][68].…”

Section: Relativistic Mean-field Formalismmentioning

confidence: 99%

“…We have used the microscopic self-consistent relativistic mean field (RMF) theory as a standard tool to investigate fusion study via Wong formula. The form of a typical relativistic Lagrangian density for a nucleon-meson many body system, [53,54,[58][59][60][61][62][63][64][65][66][67][68][69][70][71][72]…”

Section: Relativistic Mean-field Formalismmentioning

confidence: 99%

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Fusion cross section for Ni-based reactions within the relativistic mean-field formalism

Bhuyan

Kumar

2018

Phys. Rev. C

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In this theoretical study, we establish an interrelationship between the nucleon-nucleon interaction potential and the nuclear fusion reaction cross-sections at low energies. The axially deformed self-consistent relativistic mean field with non-linear NL3 * force is used to calculate the density distribution of the projectile and target nuclei for fusion. The Wong formula is used to estimate the fusion cross-section and barrier distribution from the nucleus-nucleus optical potential for Nibased systems, which are known for fusion hindrance phenomena. The results of the application of the so obtained nucleus-nucleus optical potential for the fusion cross-section from the recently developed relativistic N N −interaction (R3Y) are compared with the well-known, phenomenological M3Y effective N N potential. We found a relatively good results from R3Y interactions below the barrier energies as compare to the M3Y potential concerning the experimental data. We also observe the density dependence on the nuclear interaction potential in terms of nucleon-nucleon optical potentials.

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Section: A Nucleus-nucleus Optical Potentialmentioning

confidence: 73%

Section: Relativistic Mean-field Formalismmentioning

confidence: 99%

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Fusion cross section for Ni-based reactions within the relativistic mean-field formalism

Bhuyan

Kumar

2018

Phys. Rev. C

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“…We apply the widely used NL3 [54] interaction parameter set for the present analysis. It is worth mentioning that the interaction parameters are able to describe the bulk properties of the nuclei reasonably good from the β-stable region to the drip-line [35,38,42,[44][45][46][47]. To deal with the open-shell nuclei, one has to consider the pairing correlations in their ground as well as excited states [33,35,38,42,[44][45][46][47].…”

Section: Relativistic Mean-field Approach For the Nuclear Densitiesmentioning

confidence: 99%

Above-barrier heavy-ion fusion cross-sections using the relativistic mean-field approach: Case of spherical colliding nuclei

et al. 2020

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In the present work, the influence of the nuclear matter density on the DF potential and on the Coulomb barrier parameters is studied systematically for collisions of spherical nuclei. The value of the parameter = ( 1 3 ⁄ + 1 3 ⁄ ) ⁄ (estimating the Coulomb barrier height) varies in these calculations from 10 MeV up to 150 MeV. We have introduced self-consistent relativistic mean field (RMF) density in the present analysis. For the nucleon-nucleon effective interaction, the M3Y forces with the finite range exchange term and density dependence are employed. The above barrier fusion cross sections are calculated within the framework of the trajectory model with surface friction. Results are compared with the previous study in which the nuclear density came from the Skyrme Hartree-Fock (HF) calculations and with the high precision experimental data. This comparison demonstrates that i) agreement between the theoretical and experimental cross sections obtained with RMF and HF densities is of the same quality and ii) the values of the only adjustable parameter (friction strength) obtained with RMF and HF densities strongly correlate with each other.where is the mass number and ( ⊥ , ) is the deformed density. The total binding energy and other observables are also obtained by using the standard relations, given in Ref. [50]. We apply the widely used NL3 [54] interaction parameter set for the present analysis. It is worth mentioning that the interaction parameters are able to describe the bulk properties of the nuclei reasonably good from the β-stable region to the drip-line [35,38,42,[44][45][46][47]. To deal with the open-shell nuclei, one has to consider the pairing correlations in their ground as well as excited states [33,35,38,42,[44][45][46][47]. The constant gap BCS approach is adopted for the present study and more details of the paring can be found in Ref. [31][32][33][34][35][36][37][38][39][40][42][43][44][45][46][47][48][49][50][51][52][53][54]. The trajectory fluctuation-dissipation model Dynamical equations and cross-sectionsThe physical picture of our dynamical model is similar to that of Ref.[55] the detail description of the model can be found in [22]. The fictitious particle with the reduced mass runs experiencing the action of the conservative, dissipative, and random (fluctuating)

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“…55 and references therein. A typical form of RMF Lagrangian density is given as, 8,29,30,32,33,56,59,60,[67][68][69][76][77][78][79][80][81][82][83][84][85][86][87][88]…”

Section: Introductionmentioning

confidence: 99%

Structural and decay properties of nuclei appearing in the $α$-decay chains of $^{296,298,300,302,304}$120 within the relativistic mean-field formalism

Biswal,

Jain,

Kumar

et al. 2021

Preprint

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An extensive study of α-decay half-lives for various decay chains of isotopes of Z = 120 is performed within the axially deformed relativistic mean-field (RMF) formalism by employing the NL3, NL3 * , and DD-ME2 parameter set. The structural properties of the nuclei appearing in the decay chains are explored. The binding energy, quadrupole deformation parameter, root-mean-square charge radius, and pairing energy are calculated for the even-even isotopes of Z = 100 − 120, which are produced in five different α-decay chains, namely, 296 120 → 260 No, 298 120 → 262 No, 300 120 → 264 No, 302 120 → 266 No, and 304 120 → 268 No. A superdeformed prolate ground state is observed for the heavier nuclei, and gradually the deformation decreases towards the lighter nuclei in the considered decay chains. The RMF results are compared with various theoretical predictions and experimental data. The α-decay energies are calculated for each decay chain. To determine the relative numerical dependency of the half-life for a specific αdecay energy, the decay half-lives are calculated using four different formulas, namely, Viola-Seaborg, Alex-Brown, Parkhomenko-Sobiczewski, and Royer for the above said five α-decay chain. We notice a firm dependency of the half-life on the α-decay formula in terms of Qα-values for all decay chains. Further, the present study also strengthens the prediction for the island of stability in terms of magic number at the superheavy valley

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Probable Decay Modes at Limits of Nuclear Stability of the Superheavy Nuclei

Cited by 19 publications

References 57 publications

Fusion cross section for Ni-based reactions within the relativistic mean-field formalism

Fusion cross section for Ni-based reactions within the relativistic mean-field formalism

Above-barrier heavy-ion fusion cross-sections using the relativistic mean-field approach: Case of spherical colliding nuclei

Structural and decay properties of nuclei appearing in the $α$-decay chains of $^{296,298,300,302,304}$120 within the relativistic mean-field formalism

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