Electromagnetic properties of indium isotopes illuminate the doubly magic character of 100Sn
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- Massachusetts Institute of Technology (MIT), Cambridge, MA (United States); Texas A&M University
- University of Manchester (United Kingdom)
- KU Leuven (Belgium)
- University of York (United Kingdom); University of Warsaw (Poland)
- Western General Hospital, Edinburgh (United Kingdom); KU Leuven (Belgium)
- Université Paris-Saclay, Orsay (France)
- TRIUMF, Vancouver, BC (Canada); McGill University, Montreal, QC (Canada)
- University of Gothenburg (Sweden)
- University of Tsukuba, Ibaraki (Japan); Technische Universität Darmstadt (Germany); GSI Helmholtzzentrum für Schwerionenforschung GmbH, Darmstadt (Germany); Max-Planck-Institut für Kernphysik, Heidelberg (Germany)
- Michigan State University, East Lansing, MI (United States)
- Friedrich-Alexander-Universität, Erlangen/Nuremberg (Germany)
- Physical Research Laboratory, Ahmedabad (India)
- Massachusetts Institute of Technology (MIT), Cambridge, MA (United States); European Organization for Nuclear Research (CERN), Geneva (Switzerland)
- Peking University, Beijing (China)
- European Organization for Nuclear Research (CERN), Geneva (Switzerland); Université Paris-Saclay, Orsay (France)
Understanding the nuclear properties in the vicinity of 100Sn, which has been suggested to be the heaviest doubly magic nucleus with proton number Z equal to neutron number N, has been a long-standing challenge for experimental and theoretical nuclear physics. In particular, contradictory experimental evidence exists regarding the role of nuclear collectivity in this region of the nuclear chart. Here, we provide further evidence for the doubly magic character of 100Sn by measuring the ground-state electromagnetic moments and nuclear charge radii of indium (Z = 49) isotopes as N approaches 50 from above using precision laser spectroscopy. Our results span almost the complete range between the two major closed neutron shells at N = 50 and N = 82 and reveal parabolic trends as a function of the neutron number, with a clear reduction towards these two closed neutron shells. Furthermore, a detailed comparison between our experimental results and numerical results from two complementary nuclear many-body frameworks (density functional theory and ab initio methods) exposes deficiencies in nuclear models and establishes a benchmark for future theoretical developments.
- Research Organization:
- Massachusetts Institute of Technology (MIT), Cambridge, MA (United States)
- Sponsoring Organization:
- Ernest Rutherford; European Research Council; European Union; European Union’s Horizon 2020; National Key R&D Program of China; National Natural Science Foundation of China; Natural Sciences and Engineering Research Council of Canada; Polish National Science Centre; Science and Technology Facilities Council; USDOE Office of Science (SC), Nuclear Physics (NP)
- Grant/Contract Number:
- SC0013365; SC0021176; SC0023175
- OSTI ID:
- 2473191
- Journal Information:
- Nature Physics, Journal Name: Nature Physics Vol. 20; ISSN 1745-2473
- Publisher:
- Nature Publishing Group (NPG)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
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