We study a global nuclear structure in the framework of experimental observables. With the aid of large nuclear structure data at the national nuclear data center, NNDC, we present the distinctive systematic patterns emerged in the first 2+ excited energies, E(2+) and their energy ratios to the first 4+ levels, R = E(4+)/E(2+), in the even-even nuclei, over 50 < Z < 82 for protons, and 50 < N < 126 for neutrons. We introduce the so-called pseudo-shell configurations from the subshells mixture in order to explain a semi-double shell closure, a shape phase transition, and a reinforced deformation. It is found that the reinforced deformation arises when Z = 64 or 66 correlates with N = 90 and reaches its maximum, indicating R = 3.3. Such a saturated reinforced deformation spans over Z = 58 to 72 and N = 100 to 106 as showing its center at Z = 64 or 66 and at N = 102 or 104. We define this reinforced deformation 'a ferro-deformation' like a ferro-magnetism in condensed matter physics. The shape coexistence would be expected to occur, such as a ferro-deformation, with a strong rotational mode, and a near spherical shape, with a vibrational mode, at the critical points of Z = 64 or 66, with N = 88 and 90; 150Sm and 152Sm, 152Gd and 154Gd, and 154Dy and 156Dy. We suggest that a super-deformation, which can be formed at high-lying excited states in a moderate deformed nucleus, would correspond to the ferro-deformation at N = 88 for the nuclei; Sm, Gd, and Dy. We argue that the ferro-deformation can be closely associated with a strong spin-orbital interaction between neutrons and protons in the spin-orbit doublet, h9/2-h11/2, leading to the critical points at Z, N = 64, 104.
Identification of Highly Deformed Even-Even Nuclides in the Neutron- and Proton-Rich Regions of the Nuclear Chart from the B(E2) and E2 Predictions in the Generalized Differential Equation Model
Two-proton removal from $^{44}$S and the structure of $^{42}$Si
新发表的$^{42}$ Si γ射线能谱和一个包含末态的$^{42}$ Si产生截面值,在一个更高统计的中能两质子去除实验从$^{44}$ S获得,被认为是在末态排它的截面使用建议的壳模型有效相互作用计算的N=28附近的核。具体地说,我们给出了使用新提出的{ \sc sdpf-mu}壳模型哈密顿量计算的双质子重叠$<^{42}$ Si $ (J^π)\,|\,^{44}$ S $>$的两个核子振幅时的截面预测。我们发现,这些部分截面或其纵向动量分布应使测量的伽马射线谱的不那么试探性的解释,并提供了一个更定量的评估建议壳模型哈密顿在这个有趣的和具有挑战性的区域的核素图。
Estimating model bias over the complete nuclide chart with sparse Gaussian processes at the example of INCL/ABLA and double-differential neutron spectra
Matter radii from interaction cross sections using microscopic nuclear densities
Facility for Rare Isotope Beams, Michigan State University(稀有同位素束设施,密歇根州立大学);Department of Physics and Astronomy, Michigan State University(物理与天文学系,密歇根州立大学);Université Paris-Saclay, CNRS/IN2P3, IJCLab(巴黎萨克雷大学,法国国家科学研究中心/法国国家原子核及粒子物理研究所,IJCLab);Institute for Theoretical Physics II, University of Erlangen(埃尔朗根大学理论物理第二研究所)
Precision Tests of Isospin Symmetry through Coulomb excitation of A = 62 Nuclei
GSI Helmholtzzentrum für Schwerionenforschung(GSI亥姆霍兹重离子研究中心);Department of Physics, The University of Tokyo(东京大学物理系);RIKEN Nishina Center(理化学研究所仁科中心);Instituto de Fisica Corpuscular, CSIC-Universidad de Valencia(瓦伦西亚大学-CSIC粒子物理研究所);Dipartimento di Fisica e Astronomia, Università di Padova(帕多瓦大学物理与天文学系);INFN, Sezione di Padova(意大利国家核物理研究所帕多瓦分部);Departamento de Física Teórica, Universidad Autónoma de Madrid(马德里自治大学理论物理系);School of Physics, Engineering and Technology, University of York(约克大学物理、工程与技术学院);College of Education, Yokohama National University(横滨国立大学教育学部);Center for Nuclear Study, University of Tokyo(东京大学核研究分中心);Instituto de Estructura de la Materia, CSIC(CSIC物质结构研究所)
First observation of multi-phonon $γ$-vibrations in an odd-odd nuclear system
Shandong University(山东大学);Vanderbilt University(范德堡大学);Université Claude Bernard Lyon 1(里昂第一大学);GANIL(法国国家大科学装置重离子加速器联合实验室);Variable Energy Cyclotron Centre(可变能量回旋加速器中心);Homi Bhabha National Institute(霍米·巴巴国立研究所);Government Degree College Shopian(肖皮安政府学位学院);Islamic University of Science and Technology(伊斯兰科学与技术大学);University of Kashmir(克什米尔大学)