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Isoscalar and isovector effective masses of the nucleon in nuclear medium are explored in the quasi-elastic electron scattering of nuclei with KIDS (Korea-IBS-Daegu-SKKU) density functional model. Effective masses are varied in the range…

核理论 · 物理学 2021-10-27 Hana Gil , Chang Ho Hyun , Kyungsik Kim

We use effective field theory to compute the influence of nuclear structure on precision calculations of atomic energy levels. As usual, the EFT's effective couplings correspond to the various nuclear properties (such as the charge radius,…

高能物理 - 唯象学 · 物理学 2021-05-19 L. Zalavari , C. P. Burgess , P. Hayman , M. Rummel

The Physical origin of the nuclear symmetry energy is studied within the relativistic mean field (RMF) theory. Based on the nuclear binding energies calculated with and without mean isovector potential for several isobaric chains we conform…

核理论 · 物理学 2009-11-11 Shufang Ban , Jie Meng , Wojciech Satula , Ramon A. Wyss

Using the model of hexagonal clusters we express the surface, curvature and Gauss curvature coefficients of the nuclear binding energy in terms of its bulk coefficient. Using the derived values of these coefficients and a single fitting…

核理论 · 物理学 2020-12-22 V. V. Sagun , K. A. Bugaev , A. I. Ivanytskyi

A clear connection can be established between properties of nuclear matter and finite-nuclei observables, such as the correlation between the slope of the symmetry energy and dipole polarizability, or between compressibility and the…

核理论 · 物理学 2023-09-01 Ante Ravlić , Esra Yüksel , Tamara Nikšić , Nils Paar

With an isospin- and momentum-dependent transport model, we find that the degree of isospin diffusion in heavy ion collisions at intermediate energies is affected by both the stiffness of the nuclear symmetry energy and the momentum…

核理论 · 物理学 2008-11-26 Lie-Wen Chen , Che Ming Ko , Bao-An Li

The spin magnetic dipole transitions and the neutron-proton spin-spin correlations in $sd-$shell even-even nuclei with $N=Z$ are investigated using shell model wave functions taking into accout enhanced isoscalar (IS) spin-triplet pairing…

核理论 · 物理学 2018-06-06 H. Sagawa , T. Suzuki

The role of the isoscalar hyperon Lambda in probing the density dependence of the nuclear symmetry energy is studied in multi-Lambda hypernuclei, hyperon-rich matter and neutron stars in relativistic models. Relationships between the…

核理论 · 物理学 2008-11-26 W. Z. Jiang

Expressing explicitly the parameters of the standard Skyrme interaction in terms of the macroscopic properties of asymmetric nuclear matter, we show in the Skyrme-Hartree-Fock approach that unambiguous correlations exist between observables…

核理论 · 物理学 2012-03-27 Lie-Wen Chen , Che Ming Ko , Bao-An Li , Jun Xu

The nuclear symmetry energy, which describes the energy difference of per proton and neutron in nuclear matter, has been extensively studied within the last two decades. Around saturation density, both the value and the slope of the nuclear…

核理论 · 物理学 2020-07-21 Gao-Chan Yong , Ya-Fei Guo

The density-dependent nuclear symmetry energy is directly related to the isospin asymmetry for finite and infinite nuclear systems. It is critical to determine the coefficients of symmetry energy and its related observables as it holds…

核理论 · 物理学 2022-08-10 Praveen K. Yadav , Raj Kumar , M. Bhuyan

The effects of the isovector-scalar $\delta$-meson field on the properties of finite nuclei, infinite nuclear matter and neutron stars are investigated within the Relativistic Mean Field (RMF) model which includes non-linear couplings.…

We perform Hartree calculations of symmetric and asymmetric semi-infinite nuclear matter in the framework of relativistic models based on effective hadronic field theories as recently proposed in the literature. In addition to the…

核理论 · 物理学 2010-12-23 M. Del Estal , M. Centelles , X. Viñas

We analyze the spin-orbit coupling term in the nuclear energy density functional in terms of a zero-range NN-contact interaction and finite-range contributions from two-pion exchange. We show that the strength of the spin-orbit contact…

核理论 · 物理学 2009-11-10 N. Kaiser

The radii of nucleon distribution, bulk density, and neutron skin in nuclei beyond the \beta-stability line are studied within the direct variational method. We evaluate the partial equation of state of finite nuclei and demonstrate that…

核理论 · 物理学 2012-03-22 V. M. Kolomietz , S. V. Lukyanov , A. I. Sanzhur

The effects of density dependence of the symmetry energy on the collective modes and dynamical instabilities of cold and warm nuclear and stellar matter are studied in the framework of relativistic mean-field hadron models. The existence of…

核理论 · 物理学 2016-08-14 Helena Pais , Alexandre Santos , Lucília Brito , Constanç a Providência

With a newly improved isospin- and momentum-dependent interaction and an isospin-dependent Boltzmann-Uehling-Uhlenbeck transport model, we have investigated the effects of the slope parameter $L$ of the nuclear symmetry energy and the…

核理论 · 物理学 2017-04-05 Hai-Yun Kong , Jun Xu , Lie-Wen Chen , Bao-An Li , Yu-Gang Ma

Elements of nuclear symmetry energy evaluated from different energy density functionals parametrized by fitting selective bulk properties of few representative nuclei are seen to vary widely. Those obtained from experimental data on nuclear…

核理论 · 物理学 2015-08-07 C. Mondal , B. K. Agrawal , J. N. De

The thermal properties of asymmetric nuclear matter are investigated in a relativistic mean- field approach. We start from free space NN-interactions and derive in-medium self-energies by Dirac-Brueckner theory. By the DDRH procedure we…

核理论 · 物理学 2015-03-11 Andreas Fedoseew , Horst Lenske

Isospin effects in 12C ion induced reactions on enriched tin isotopes are investigated. The isoscaling parameter B is determined for different mass regions of product nuclei. It is shown that the isoscaling parameter is sensitive to the…