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Neutron skins encode essential information about nuclear geometry, surface structure, and isovector response, yet a compact description across the nuclear chart remains elusive. We present an empirical analysis of neutron-excess surface…

核理论 · 物理学 2026-03-05 Brent Baker

The KIDS framework for the nuclear equation of state (EoS) and energy density functional (EDF) offers the possibility to explore systematically the effect of EoS parameters on predictions for a variety of observables. The EoS parameters can…

核理论 · 物理学 2021-12-08 Panagiota Papakonstantinou

A shell-model study of proton-neutron pairing in $2p1f$ shell nuclei using a parametrized hamiltonian that includes deformation and spin-orbit effects as well as isoscalar and isovector pairing is reported. By working in a shell-model…

核理论 · 物理学 2015-05-28 Y. Lei , S. Pittel , N. Sandulescu , A. Poves , B. Thakur , Y. M. Zhao

In the framework of the Standard Model (SM) a theoretical description of the neutron beta decay is given at the level of 10^{-5}. The neutron lifetime and correlation coefficients of the neutron beta decay for a polarized neutron, a…

高能物理 - 唯象学 · 物理学 2021-09-08 A. N. Ivanov , R. Höllwieser , N. I. Troitskaya , M. Wellenzohn , Ya. A. Berdnkov

Nuclei with large neutron-to-proton ratios have neutron skins, which manifest themselves in an excess of neutrons at distances greater than the radius of the proton distribution. In addition, some drip-line nuclei develop very extended halo…

核理论 · 物理学 2009-10-31 S. Mizutori , J. Dobaczewski , G. A. Lalazissis , W. Nazarewicz , P. -G. Reinhard

Using the relativistic mean-field model with nonlinear couplings between the isoscalar and isovector mesons, we study the properties of isospin-asymmetric nuclear matter. Not only the vector mixing,…

核理论 · 物理学 2022-04-18 Tsuyoshi Miyatsu , Myung-Ki Cheoun , Koichi Saito

The dependence between neutron-to-proton yield ratio ($R_{np}$) and neutron skin thickness ($\delta_{np}$) in neutron-rich projectile induced reactions is investigated within the framework of the Isospin-Dependent Quantum Molecular Dynamics…

核理论 · 物理学 2009-12-22 X. Y. Sun , D. Q. Fang , Y. G. Ma , X. Z. Cai , J. G. Chen , W. Guo , W. D. Tian , H. W. Wang

The neutron skin in deformed nuclei is generally not uniformly distributed but has an angular distribution, depending on both the spin-dependent nuclear interaction and the nuclear symmetry energy. To extract the information of the deformed…

核理论 · 物理学 2023-01-24 Lu-Meng Liu , Jun Xu , Guang-Xiong Peng

The effects of neutron skin on the multiplicity ($N_{\rm ch}$) and eccentricity($\epsilon_2$) in relativistic $^{96}_{44}$Ru+$^{96}_{44}$Ru and $^{96}_{40}$Zr+$^{96}_{40}$Zr collisions at $\sqrt{s_{_{\rm NN}}}=200$ GeV are investigated with…

核理论 · 物理学 2021-09-09 Hao-jie Xu , Hanlin Li , Xiaobao Wang , Caiwan Shen , Fuqiang Wang

We systematically investigate the neutron-skin thickness of neutron-rich nuclei within a compressible droplet model, which includes several parameters characterizing the surface tension and the equation of state (EOS) of asymmetric nuclear…

核理论 · 物理学 2017-09-27 W. Horiuchi , S. Ebata , K. Iida

We report on our studies of the neutron-skin effects in high-$p_{\mathrm{T}}$ observables at the LHC. We study the impact of the neutron-skin effect on the centrality dependence of inclusive direct photon, high-$p_{\mathrm{T}}$ hadron and…

高能物理 - 唯象学 · 物理学 2016-06-30 Ilkka Helenius , Hannu Paukkunen , Kari J. Eskola

Atomic nuclei can be spontaneously deformed into non-spherical shapes as many-nucleon systems. We discuss to what extent a similar deformation takes place in many-electron systems. To this end, we employ several many-body methods, such as…

原子物理 · 物理学 2021-09-24 Tomoya Naito , Shimpei Endo , Kouichi Hagino , Yusuke Tanimura

Evolution of quadrupole deformations in $sd$ and $pf$ shell nuclei with mass A= 18$\sim$56 is studied by using deformed Skyrme Hartree-Fock (HF) model with pairing correlations. We point out that the quadrupole deformations of the nuclei…

核理论 · 物理学 2009-11-11 H. Sagawa , X. R. Zhou , X. Z. Zhang

We study the correlation between the thickness of the neutron skin in finite nuclei and the nuclear symmetry energy for isotopic chains of even-even Ni, Sn, and Pb nuclei in the framework of the deformed self-consistent mean-field Skyrme…

核理论 · 物理学 2015-05-30 M. K. Gaidarov , A. N. Antonov , P. Sarriguren , E. Moya de Guerra

The nuclear level densities and level-density parameters in fissioning nuclei at their saddle points of fission barriers - $a_{f}$, as well as those for neutron - $a_{n}$, proton - $a_{p}$ , and $\alpha$-particle - $a_{\alpha}$ emission…

The relation between nuclear saturation and NN-correlations is examined. Nucleons bound in a nucleus have a reduced effective mass due to the mean field. This results in off-energy-shell scatterings modifying the free-space NN-interaction…

核理论 · 物理学 2007-05-23 H. S. Köhler , S. A. Moszkowski

The symmetry energy, the neutron pressure and the asymmetric compressibility of deformed neutron-rich even-even nuclei are calculated on the examples of Kr and Sm isotopes within the coherent density fluctuation model using the symmetry…

核理论 · 物理学 2015-06-05 M. K. Gaidarov , A. N. Antonov , P. Sarriguren , E. Moya de Guerra

A study of the charge and matter densities and the corresponding rms radii for even-even isotopes of Ni, Kr, and Sn has been performed in the framework of deformed self-consistent mean field Skyrme HF+BCS method. The resulting charge radii…

核理论 · 物理学 2008-11-26 P. Sarriguren , M. K. Gaidarov , E. Moya de Guerra , A. N. Antonov

The critical densities and impact of forming \D resonances in neutron stars are investigated within an extended nonlinear relativistic mean-field (RMF) model. The critical densities for the formation of four different charge states of \D…

核理论 · 物理学 2015-07-08 Bao-Jun Cai , Farrukh J. Fattoyev , Bao-An Li , William G. Newton

We develop a relativistic mean field (RMF) description of deformed nuclei with the pairing correlations in the BCS approximation. The treatment of the pairing correlations for nuclei with the Fermi surface being close to the threshold of…

核理论 · 物理学 2009-11-10 L. S. Geng , H. Toki , S. Sugimoto , J. Meng