Electromagnetic properties of indium isotopes illuminate the doubly magic character of 100Sn

Karthein, J.; Ricketts, C. M.; Garcia Ruiz, R. F.; Billowes, J.; Binnersley, C. L.; Cocolios, T. E.; Dobaczewski, J.; Farooq-Smith, G. J.; Flanagan, K. T.; Georgiev, G.; Gins, W.; de Groote, R. P.; Gustafsson, F. P.; Holt, J. D.; Kanellakopoulos, A.; Koszorús, Á.; Leimbach, D.; Lynch, K. M.; Miyagi, T.; Nazarewicz, W.; Neyens, G.; Reinhard, P. -G.; Sahoo, B. K.; Vernon, A. R.; Wilkins, S. G.; Yang, X. F.; Yordanov, D. T.

doi:10.1038/s41567-024-02612-y

Title: Electromagnetic properties of indium isotopes illuminate the doubly magic character of ¹⁰⁰Sn

Journal Article · 30 September 2024 · Nature Physics

DOI: https://doi.org/10.1038/s41567-024-02612-y · OSTI ID:2473191

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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.

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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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Dataset: Nuclear moments of indium isotopes reveal abrupt change at magic number 82 Vernon, Adam Zenodo https://doi.org/10.5281/zenodo.6406949	dataset	January 2022

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Title: Electromagnetic properties of indium isotopes illuminate the doubly magic character of 100Sn

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Title: Electromagnetic properties of indium isotopes illuminate the doubly magic character of ¹⁰⁰Sn