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Low-$$\textit{Z}$$ boundary of the $$\textit{N}$$ = 88–90 shape phase transition: 148Ce near the critical point

Journal Article · · Physical Review. C
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  1. Technische Univ. Darmstadt (Germany); GSI Helmoltzzentrum für Schwerionenforschung GmbH, Darmstadt (Germany); OSTI
  2. Technische Univ. Darmstadt (Germany); Yale Univ., New Haven, CT (United States)
  3. Technische Univ. Darmstadt (Germany)
  4. University of Zagreb (Croatia)
  5. VŠB-Technical University Ostrava (Czech Republic)
  6. Yale Univ., New Haven, CT (United States)
  7. Inst. Laue-Langevin (ILL), Grenoble (France)
  8. Univ. of Brighton (United Kingdom)
  9. Istanbul Univ. (Turkey)
  10. Universidad Complutense, Madrid (Spain)
  11. Grand Accélérateur National d’Ions Lourds (GANIL), Caen (France)
  12. University Cologne (Germany)
  13. Univ. Paris-Saclay, Gif-sur-Yvette (France)
  14. Univ. of Surrey, Guildford (United Kingdom)
  15. National Centre for Nuclear Research, Warsaw (Poland)
  16. Horia Hulubei, Bucharest (Romania)
  17. Univ. of Surrey, Guildford (United Kingdom); National Physical Laboratory, Teddington (United Kingdom)
  18. Université Grenoble Alpes (France)
  19. Universita di Padova (Italy); ELI-Nuclear Physics (ELI-NP), Bucharest-Magurele (Romania)
  20. Inst. Laue-Langevin (ILL), Grenoble (France); Univ. of Warsaw (Poland)
  21. Istituto Nazionale di Fisica Nucleare (INFN), Legnaro (Italy). Laboratori Nazionali di Legnaro
+ Show Author Affiliations
Excited states of the neutron-rich nucleus 148Ce have been populated by neutron-induced fission of a 235U target. In this work, its electromagnetic decays were studied by means of γ-ray coincidence spectroscopy with fast-timing capabilities. Lifetimes of the $$2^+_1$$ and $$4^+_1$$ states of 148Ce were obtained and their $$\textit{E}2$$ decay rates deduced. The $$B_{4/2} = B(E2; 4^+_1 → 2^+_1)/B(E2; 2^+_1 → 0^+_1)$$ ratio indicates that 148Ce is a transitional nucleus while the $$\textit{N}$$ = 88–90 shape phase transition evolves into a gradual change of nuclear deformation for proton numbers $$\textit{Z}$$ < 60.
Research Organization:
Yale Univ., New Haven, CT (United States)
Sponsoring Organization:
Deutsche Forschungsgemeinschaft (DFG); European Regional Development Fund (ERDF); Federal Ministry of Education and Research (BMBF); Science and Technology Facilities Council (STFC); UK Department of Business, Energy and Industrial Strategy (BEIS); USDOE Office of Science (SC)
Grant/Contract Number:
FG02-91ER40609
OSTI ID:
1800743
Journal Information:
Physical Review. C, Journal Name: Physical Review. C Journal Issue: 1 Vol. 101; ISSN 2469-9985
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English

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