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Related papers: Charge radii and structural evolution in Sr, Zr, a…

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The slope of the neutron star mass-radius curve, $dM/dR$, is studied to understand the information it may carry about the composition of neutron stars, particularly with regard to the presence of non-nucleonic degrees of freedom. This study…

Nuclear Theory · Physics 2025-10-29 Márcio Ferreira , Constança Providência

We revisit the studies of the isotopic shift in the charge radii of {\it even-even} isotopes of Sn and Pb nuclei at $N$ = 82, and 126, respectively, within the relativistic mean-field and Relativistic-Hartree-Bogoliubov approach. The shell…

Nuclear Theory · Physics 2021-07-07 M. Bhuyan , B. Maheshwari , H. A. Kassim , N. Yusof , S. K. Patra , B. V. Carlson , P. D. Stevenson

Backward elastic electron scattering from odd-A nuclear targets is characterized by magnetic form factors containing precise information on the nuclear structure. We study the sensitivity of the magnetic form factors to structural effects…

Nuclear Theory · Physics 2021-01-13 B. Hernandez , P. Sarriguren , O. Moreno , E. Moya de Guerra , D. N. Kadrev , A. N. Antonov

Fragment average isospin distributions are investigated within a microcanonical multifragmentation model in different regions of the phase diagram. The results indicate that in the liquid phase $<N/Z>$ versus $Z$ is monotonically…

Nuclear Theory · Physics 2009-11-11 Ad. R. Raduta

The deformation properties within the $^{98-106}$Ru even-even isotopic chain, are investigated by means of the Covariant Density Functional Theory with a Density-Dependent Point-Coupling X parametrization. The considered nuclei are found to…

Nuclear Theory · Physics 2026-03-10 R. Budaca , P. Buganu , F. El Ouardi , A. Lahbas

Background: In neutron-rich nuclei neighboring 42Si, the quenching of the N = 28 shell gap occurs and is expected to induce the shape coexistence in their excitation spectra. Purpose: We show that different nuclear shapes coexist in N = 28…

Nuclear Theory · Physics 2022-01-19 Y. Suzuki , W. Horiuchi , M. Kimura

Based on relativistic mean field theory for atomic nuclei, we compute the mass radius and other radii associated with the energy momentum tensor for dozens of spin-0 nuclei across the nuclear chart. We also compute the D-term of these…

Nuclear Theory · Physics 2026-05-13 Yoshitaka Hatta , Tomohiro Oishi , Makoto Oka

The anomalous rod shape in carbon isotopes has been investigated in the framework of the cranking covariant density functional theory, and two mechanisms to stabilize such a novel shape with respect to the bending motion, extreme spin, and…

Nuclear Theory · Physics 2015-07-09 P. W. Zhao , N. Itagaki , J. Meng

Shape coexistence in the $Z \approx 82$ region has been established in mercury, lead and polonium isotopes. Even-even mercury isotopes with $100 \leq N \leq 106$ present multiple fingerprints of this phenomenon, which seems to be no longer…

Structural evolution in neutron-rich Os and W isotopes is investigated in terms of the Interacting Boson Model (IBM) Hamiltonian determined by (constrained) Hartree-Fock-Bogoliubov (HFB) calculations with the Gogny-D1S Energy Density…

The interacting boson model with configuration mixing, with parameters derived from the self-consistent mean-field calculation employing the microscopic Gogny energy density functional, is applied to the systematic analysis of the low-lying…

Nuclear Theory · Physics 2014-02-04 K. Nomura , R. Rodriguez-Guzman , L. M. Robledo

The Zirconium isotopes exhibit structural properties that present multiple challenges to nuclear theory. Investigations of the coupling present within isoscalar modes and within isovector modes are scarce but important for advancing our…

Nuclear Theory · Physics 2025-05-22 E. V. Chimanski , E. J. In , S. Péru , A. Thapa , W. Younes , J. E. Escher

The structure of low-lying states of $N=50$ nuclei is investigated by the advanced Monte Carlo shell model (MCSM) in the $\pi{(fp)}$-$\nu{(sdg)}$ model space. We have employed the shell-model Hamiltonian based on the valence-space in-medium…

Nuclear Theory · Physics 2025-10-21 Anil Kumar , Noritaka Shimizu , Takayuki Miyagi , Yusuke Tsunoda , Yutaka Utsuno

The possible exotic nuclear properties in the neutron-rich Ca, Ni, Zr, and Sn isotopes are explored with the continuum Skyrme Hartree-Fock-Bogoliubov theory formulated with the Green's function method. The available experimental two-neutron…

Nuclear Theory · Physics 2022-05-26 En-Bo Huo , Ting-Ting Sun , Ke-Ran Li , Xiao-Ying Qu , Ying Zhang

The goal of this contribution is to analyze the connection between shape coexistence and quantum phase transition, two seemingly unrelated phenomena that share common aspects, namely, the rapid change in the ground state structure along an…

Nuclear Theory · Physics 2018-06-13 J. E. García-Ramos , K. Heyde

A very good linear correlation is found between the four-point charge radius relation $\delta R_{2p-2n}(Z,N)$ with that of quadrupole deformation data in even-even nuclei. This results in a further improved charge radius relation that holds…

Nuclear Theory · Physics 2017-01-19 Bao-Hua Sun , Chuan-Ye Liu , Hao-Xin Wang

We use the relativistic mean field (RMF) theory to systematically study the change of deformation of even-even nuclei in the proton-rich Xe region. We investigate the appearance of triaxial deformation in 25 nuclei in the region covering…

Nuclear Theory · Physics 2007-05-23 S. Sugimoto , K. Sumiyoshi , D. Hirata , B. V. Carlson , I. Tanihata , H. Toki

There is a large body of evidence that atomic nuclei can undergo octupole distortion and assume the shape of a pear. This phenomenon is important for measurements of electric-dipole moments of atoms, which would indicate CP violation and…

The orbital shapes and charge disproportionations at nominal Mn$^{3+}$ and Mn$^{4+}$ sites for the charge- and orbital-ordered phases have been studied on half-doped manganites Pr(Sr$_{0.1}$Ca$_{0.9}$)$_2$Mn$_2$O$_7$ and…

Strongly Correlated Electrons · Physics 2009-10-17 D. Okuyama , Y. Tokunaga , R. Kumai , Y. Taguchi , T. Arima , Y. Tokura

In this contribution, the shape coexistence phenomenon near the proton sub-shell closure at Z=40 is analyzed. Particular emphasis is placed on extracting the nuclear deformation values by examining experimental B(E2) transition rates and…

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