NUCLEAR SUB-STRUCTURE IN <sup>112–122</sup><font>Ba</font> NUCLEI WITHIN RELATIVISTIC MEAN FIELD THEORY

Bhuyan, M.; Patra, S. K.; Arumugam, P.; Gupta, Raj K.

doi:10.1142/s021830131101837x

Cited by 15 publications

(29 citation statements)

References 37 publications

(75 reference statements)

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“…The isotopes of uranium, namely 214,216,218 U, are studied here microscopically within the relativistic mean-field formalism in which the interaction between the many-body system of nucleons and mesons is expressed via the non-linear effective Lagrangian [41][42][43][54][55][56][57][58],…”

Section: Theoretical Frameworkmentioning

confidence: 99%

Divergence in the Relativistic Mean Field Formalism: A Case Study of the Ground State Properties of the Decay Chain of 214,216,218U Isotopes

et al. 2022

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A new α-emitting has been observed experimentally for neutron deficient 214U which opens the window to theoretically investigate the ground state properties of 214,216,218U isotopes and to examine α-particle clustering around the shell closure. The decay half-lives are calculated within the preformed cluster-decay model (PCM). To obtain the α-daughter interaction potential, the RMF densities are folded with the newly developed R3Y and the well-known M3Y NN potentials for comparison. The alpha preformation probability (Pα) is calculated from the analytic formula of Deng and Zhang. The WKB approximation is employed for the calculation of the transmission probability. The individual binding energies (BE) for the participating nuclei are estimated from the relativistic mean-field (RMF) formalism and those from the finite range droplet model (FRDM) as well as WS3 mass tables. In addition to Z=84, the so-called abnormal enhancement region, i.e., 84≤Z≤90 and N<126, is normalised by an appropriately fitted neck-parameter ΔR. On the other hand, the discrepancy sets in due to the shell effect at (and around) the proton magic number Z=82 and 84, and thus a higher scaling factor ranging from 10−5–10−8 is required. Additionally, in contrast with the experimental binding energy data, large deviations of about 5–10 MeV are evident in the RMF formalism despite the use of different parameter sets. An accurate prediction of α-decay half-lives requires a Q-value that is in proximity with the experimental data. In addition, other microscopic frameworks besides RMF could be more reliable for the mass region under study. α-particle clustering is largely influenced by the shell effect.

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Section: Theoretical Frameworkmentioning

confidence: 99%

Divergence in the Relativistic Mean Field Formalism: A Case Study of the Ground State Properties of the Decay Chain of 214,216,218U Isotopes

et al. 2022

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“…It is worth mentioning that the ranges are fixed by graphical method which is guided the ranges for different clusters for some of the Mg isotopes are listed in Table 2. The formula used to identify the ingredient of the cluster is given by [28,30]:…”

Section: B the Clustering And Sub-atomic Nucleimentioning

confidence: 99%

“…In this context, the present work directed to a particular case for Mg isotopes is taken up to examine the preformed clusters and their constituents. It is worth mentioning that, the RMF theory is very much successful in explaining the sub-atomic nuclei [28][29][30] and the decays of these nuclei [31,32]. Because of its applicability, we have used RMF theory with the recently developed NL3 * [33] and NL075 [34] parameter sets to study the clustering phenomena.…”

Section: Introductionmentioning

confidence: 99%

The Oxygen Core Inside the Magnesium Isotopes

Bhuyan

2013

Int. J. Mod. Phys. E

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We have studied the ground state bulk properties of magnesium isotopes using axially symmetric relativistic mean field formalism. The BCS pairing approach is employed to take care of the pairing correlation for the open shell nuclei. The contour plot of the nucleons distribution are analyzed at various parts of the nucleus, where clusters are located. The presence of an 16 O core along bubble like α-particle(s) and few nucleons are found in the Mg isotopes.

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“…4,5,[19][20][21][22][23][24][25] The decay properties of superheavy nuclei are strongly connected with the stability via shell effects, isospin dependency of the nuclear structure, nuclear deformation, rotational and vibrational properties, occupation and/or single-particle energy level, and fusion-fission dynamics. [26][27][28][29][30][31][32][33][34] Most of the proton-rich SHN are identified experimentally via α-decay chains, which provides important information about the influence of nuclear structure on the decay properties of these nuclei. A superheavy nucleus predominantly undergoes sequential α-decay (s), followed by subsequent spontaneous fission.…”

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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NUCLEAR SUB-STRUCTURE IN ^112–122Ba NUCLEI WITHIN RELATIVISTIC MEAN FIELD THEORY

Cited by 15 publications

References 37 publications

Divergence in the Relativistic Mean Field Formalism: A Case Study of the Ground State Properties of the Decay Chain of 214,216,218U Isotopes

Divergence in the Relativistic Mean Field Formalism: A Case Study of the Ground State Properties of the Decay Chain of 214,216,218U Isotopes

The Oxygen Core Inside the Magnesium Isotopes

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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NUCLEAR SUB-STRUCTURE IN 112–122Ba NUCLEI WITHIN RELATIVISTIC MEAN FIELD THEORY

Cited by 15 publications

References 37 publications

Divergence in the Relativistic Mean Field Formalism: A Case Study of the Ground State Properties of the Decay Chain of 214,216,218U Isotopes

Divergence in the Relativistic Mean Field Formalism: A Case Study of the Ground State Properties of the Decay Chain of 214,216,218U Isotopes

The Oxygen Core Inside the Magnesium Isotopes

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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NUCLEAR SUB-STRUCTURE IN ^112–122Ba NUCLEI WITHIN RELATIVISTIC MEAN FIELD THEORY