Impacts of the tensor couplings of<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mi>ω</mml:mi></mml:math>and<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mi>ρ</mml:mi></mml:math>mesons and Coulomb-exchange terms on superheavy nuclei and their relation to the symmetry energy

Liliani, Netta; Nugraha, A. M.; Diningrum, Jenny Primanita; Sulaksono, A.

doi:10.1103/physrevc.93.054322

Cited by 8 publications

(12 citation statements)

References 59 publications

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“…In the mean-field approximation and under the symmetries of the application to spherical nuclei, the currents and densities (77), (78), (79), and (80) reduce to the forms (34) and (35) with the appropriate coupling factors g i j . Similarly, the selfenergies (82) and (83) become simple potentials (13) and (14) where only the μ = 0 component of Σ μ and j 0 = ρ v remain.…”

Section: Discussionmentioning

confidence: 99%

“…The effects on the evolution of shell gaps and spin-orbits splittings were explored in [32] and in [33], respectively, in comparison to other relativistic EDFs. Another series of RHF parametrisations was presented in [34] with an extensive exploration of the effects. The Zimanyi-Moszkowski version of the RMF Lagrangian was generalized in [35] with a ω tensor coupling contribution to increase the small spin-orbit splitting of the original model.…”

Section: Introductionmentioning

confidence: 99%

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Parametrisations of relativistic energy density functionals with tensor couplings

Typel

Terrero

2020

Eur. Phys. J. A

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The relativistic density functional with minimal density dependent nucleon-meson couplings for nuclei and nuclear matter is extended to include tensor couplings of the nucleons to the vector mesons. The dependence of the minimal couplings on either vector or scalar densities is explored. New parametrisations are obtained by a fit to nuclear observables with uncertainties that are determined self-consistently. The corresponding nuclear matter parameters at saturation are determined including their uncertainties. An improvement in the description of nuclear observables, in particular for binding energies and diffraction radii, is found when tensor couplings are considered, accompanied by an increase of the Dirac effective mass. The equations of state for symmetric nuclear matter and pure neutron matter are studied for all models. The density dependence of the nuclear symmetry energy, the Dirac effective masses and scalar densities is explored. Problems at high densities for parametrisations using a scalar density dependence of the couplings are identified due to the rearrangement contributions in the scalar self-energies that lead to vanishing Dirac effective masses.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Parametrisations of relativistic energy density functionals with tensor couplings

Typel

Terrero

2020

Eur. Phys. J. A

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“…Hingga saat ini, model RMF merupakan salah satu model yang cukup baik dalam menghitung properti nuklir dan melihat beberapa fenomena nuklir. Prinsip sederhana dari model RMF adalah anggapan bahwa sifat-sifat dari partikel tunggal dan nuklir dapat ditentukan oleh harga rata-rata (mean) dari kontribusi setiap penyusunnya yakni proton dan neutron (nukleon) [5]. Besaran properti nuklir yang dihasilkan dengan menggunakan model ini melibatkan interaksi kuat yang terjadi pada nuklir, yang dimodelkan dalam bentuk pertukaran meson antar nukleon dalam nuklir.…”

Section: Pendahuluanunclassified

Struktur Nuklir: Halo dan Pairing pada Neutron Rich Nuclei

Nugraha

2020

JJMS

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Fenomena halo dan pairing merupakan perilaku unik dari neutron yang terdapat pada suatu inti atom. Halo neutron dalam nuklir digambarkan adanya kemunculan ’ekor’ dan adanya ’ruang kosong’ antara core dan ekor pada distribusi neutron akibat energi ikat yang lemah sedangkan pairing adalah fenomena kolektif yang terjadi akibat neutron yang berlebih dalam inti atom berpasangan. Fenomena pairing atau pasangan mengakibatkan perubahan energi ikat inti atom, fenomena ini dapat terlihat jelas pada nuklida dan isotop dengan jumlah neutron genap. Umumnya fenomena halo merupakan fenomena yang muncul akibat adanya faktor repulsif dalam inti atom sedangkan fenomena pairing diakibatkan faktor attraktif. Kedua fenomena ini bukanlah merupakan fenomena yang kontradiktif namun dapat muncul secara bersamaan dalam suatu nuklida terutama pada neutron rich nuclei atau inti atom yang kaya dengan neutron seperti isotop Sn.

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“…In the past, the RMF models has been successfully employed to study finite nuclei and nuclear matter properties [6]. The Lagrangian density of the system is [3] L = L f ree nucleon + L f ree…”

Section: Formalismmentioning

confidence: 99%

“…The effect of tensor coupling, isoscalar and electromagnetic exchange is studied through the theory of Modified Relativistic Mean Field (MRMF). It was found that the tensor coupling, the isoscalar and electromagnetic interchanges had a significant effect on the nature of nuclear matter, energy binding, single particle energy spectrum, density distribution and core skin thickness [3]. Electromagnetic exchange energy contribution can be obtained using formulas with a relative deviation of less than 1 % for semi-magic isotopes Ca, Ni, Sn and Pb.…”

Section: Introductionmentioning

confidence: 99%

Nuclear bubble in Sn isotope within modified relativistic mean field

Sunardi¹,

Sulaksono²

2018

AIP Conference Proceedings

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Nuclear bubble is one of the interesting phenomena in nuclei. Nuclear bubble is characterized by existence of depletion at the center of nuclei [1,2]. In this study, we investigated the nuclear bubble phenomena on Sn isotopes by assuming the corresponding nuclei are spherical. We used Modified Relativistic Mean Field model [3] to describe the interaction among nucleons in nuclei. It is found that the corresponding depletion near the center of each nucleus density in Sn isotope is insensitive to the nonlinear isovector parameter variation. In this work, we also study the effects of tensor and electromagnetic exchange term of the corresponding model on nuclear bubble phenomena on Sn isotopes.

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Impacts of the tensor couplings ofωandρmesons and Coulomb-exchange terms on superheavy nuclei and their relation to the symmetry energy

Cited by 8 publications

References 59 publications

Parametrisations of relativistic energy density functionals with tensor couplings

Parametrisations of relativistic energy density functionals with tensor couplings

Struktur Nuklir: Halo dan Pairing pada Neutron Rich Nuclei

Nuclear bubble in Sn isotope within modified relativistic mean field

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