B. Fernandez-Dominguez, J. S. Thomas, W. N. Catford, F. Delaunay, S. M. Brown, N. A. Orr, M. Rejmund, N. L. Achouri, H. Al Falou, N. A. Ashwood, D. Beaumel, Y. … 展开作者
B. Fernandez-Dominguez, J. S. Thomas, W. N. Catford, F. Delaunay, S. M. Brown, N. A. Orr, M. Rejmund, N. L. Achouri, H. Al Falou, N. A. Ashwood, D. Beaumel, Y. Blumenfeld, B. A. Brown, R. Chapman, M. Chartier, N. Curtis, C. Force, G. de France, S. Franchoo, J. Guillot, P. Haigh, F. Hammache, M. Labiche, V. Lapoux, R. C. Lemmon, F. Marechal, A. Moro, B. Martin, X. Mougeot, B. Mouginot, L. Nalpas, A. Navin, N. Patterson, B. Pietras, E. C. Pollacco, A. Leprince, A. Ramus, J. A. Scarpaci, N. de Séréville, I. Stefan, O. Sorlin, G. Wilson
The spectroscopy of 21O has been investigated using a radioactive 20O beam and the (d,p) reaction in inverse kinematics. The ground and first excited states have been determined to be Jpi=5/2+ and Jpi=1/2+ respectively. Two neutron unbound states were observed at excitation energies of 4.76 +- 0.10 and 6.16 +- 0.11. The spectroscopic factor deduced for the lower of these interpreted as a 3/2+ level, reveals a rather pure 0d3/2 single-particle configuration. The large energy difference between the 3/2+ and 1/2+ states is indicative of the emergence of the N=16 magic number. For the higher lying resonance, which has a character consistent with a spin-parity assignment of 3/2+ or 7/2-, a 71% branching ratio to the first 2+ state in 20O has been observed. The results are compared with new shell model calculations.
Evolution of the N=50 shell gap energy towards $^{78}$Ni
首次测量了富中子同位素$^{76-80}$ Zn、$^{78-83}$ Ga、$^{80-85}Ge, $ ^{81-87} $As and $ ^{84-89} $Se have been measured with high precision using the Penning trap mass spectrometer JYFLTRAP at the IGISOL facility. The masses of $ ^{82，83} $Ga, $ ^{83-85} $Ge, $ ^{84-87} $As and $ ^{89}$Se的原子质量。这些新的数据代表了在这个中子丰富的区域的质量的知识的重大改进。双中子分离能提供了N=50的壳层能隙向锗Z=32方向减少以及随后在镓（Z=31）处增加的证据。的数据进行了比较与一些理论模型。获得了壳间隙对镍（Z=28）的持久刚性的指示。
Shell gaps and pn pairing interaction in N = Z nuclei
我们分析了观察到的壳层间隙N=Z核确定的结合能差。结果表明，壳层能隙可以用单粒子能级间距、类核子配对和质子-中子配对相互作用的综合贡献来描述。这一结论与Chasman在Phys. Rev. Lett. 99（2007）082501。对于双闭壳层N=Z核，用Woods-Saxon势计算的单粒子能级间距与从观察到的壳层能隙中减去nn对相互作用得到的结果非常接近.对于亚封闭或非封闭壳层N=Z核，pn配对相互作用被证明是重要的观察到的壳层间隙。
Constraining the trend of the $N = 50$ shell gap towards $^{100}$Sn with the masses of $^{96-98}$Cd
Max-Planck-Institut für Kernphysik（马克斯·普朗克核物理研究所）；Studiecentrum voor Kernenergie SCK-CEN（比利时核能研究中心）；European Organization for Nuclear Research (CERN)（欧洲核子研究组织（欧洲核子中心））；Johannes Gutenberg-Universität Mainz（美因茨约翰内斯·古腾堡大学）；Massachusetts Institute of Technology（麻省理工学院）；Université Paris-Saclay, CNRS/IN2P3, IJCLab（巴黎萨克雷大学，法国国家科学研究中心/法国原子能和替代能源委员会，IJCLab实验室）；Institut für Physik, Universität Greifswald（格赖夫斯瓦尔德大学物理研究所）；FAIR GmbH（FAIR有限责任公司）；GSI Helmholtzzentrum für Schwerionenforschung GmbH（GSI亥姆霍兹重离子研究中心有限公司）；TRIUMF（特里厄姆福国家粒子加速器中心）；McGill University（麦吉尔大学）；Cyclotron Institute and Department of Physics and Astronomy, Texas A&M University（德克萨斯农工大学回旋加速器研究所及物理与天文学系）
$β$-Decay Half-Lives Serve as Novel Evidence for the New Magic Number \(N=32\)
School of Nuclear Science and Technology, Lanzhou University（兰州大学核科学与技术学院）；Frontiers Science Center for Rare isotopes, Lanzhou University（兰州大学稀有同位素前沿科学中心）；Institute of Modern Physics, Chinese Academy of Sciences（中国科学院近代物理研究所）；Department of Nuclear Physics, China Institute of Atomic Energy（中国原子能科学研究院核物理系）；School of Physics and Optoelectronic Engineering, Anhui University（安徽大学物理与光电工程学院）
