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Charge radii and electromagnetic moments of 214−218Bi : Exploring the “southern” border of the 𝑍 > 82 octupole-deformation region

Journal Article · · Physical Review. C
DOI:https://doi.org/10.1103/sltw-g4d6· OSTI ID:3004102
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  1. European Organization for Nuclear Research (CERN), Geneva (Switzerland); et al.
  2. University of York; Advanced Science Research Center
  3. University of York
  4. CERN
  5. Affiliated with an institute covered by a cooperation agreement with CERN at the time of the experiment
  6. CSIC - Universidad de Valencia; Institute of Nuclear research
  7. Comenius University in Bratislava
  8. College of Applied Sciences
  9. Max-Planck-Institut für Kernphysik; CERN
  10. Universidad Complutense de Madrid
  11. Istituto Nazionale di Fisica Nucleare, Sezione di Milano
  12. University of Surrey
  13. The University of Manchester
  14. Max-Planck-Institut für Kernphysik
  15. Instituto de Estructura de la Materia, CSIC
  16. CERN; Johannes Gutenberg-Universität of Mainz
  17. “Horia Hulubei” National Institute for R & D in Physics and Nuclear Engineering
  18. KU Leuven
  19. TRIUMF; CERN; The University of Manchester
  20. Aarhus University
  21. Johannes Gutenberg-Universität of Mainz
  22. University of the West of Scotland
  23. CERN; KU Leuven
  24. University of Jyväskylä
  25. University of York; CERN
  26. University of Liverpool
  27. CERN; Johannes Gutenberg-Universität of Mainz; The University of Manchester
  28. FAIR
  29. Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Legnaro
  30. Universität zu Köln
  31. CERN; University of Gothenburg
  32. STFC Daresbury
  33. Institute of Modern Physics; University of Chinese Academy of Sciences
  34. CSNSM-CNRS; Université de Paris Sud
  35. CERN; The University of Manchester
  36. University of Tennessee
  37. CSIC - Universidad de Valencia
  38. GSI Helmholtzzentrum für Schwerionenforschung
  39. Universität Greifswald; RIKEN Nishina Center
  40. Universität Greifswald
  41. KU Leuven; Institut Laue-Langevin
  42. Technische Universität Darmstadt
  43. CERN; Technische Universität Dresden
  44. CERN; Universität Greifswald; Technische Universität Darmstadt
  45. Max-Planck-Institut für Kernphysik; Universität Greifswald; The University of Sydney
+ Show Author Affiliations

The changes in the mean-squared charge radii relative to 209Bi126 (𝛿⁢⟨𝑟2⟩𝑁,126) and the magnetic dipole and electric quadrupole moments in 214−218Bi have been measured using the in-source resonance-ionization spectroscopy technique at ISOLDE (CERN). Magnetic moments of odd-odd bismuth nuclei have been analyzed by the additivity relation. Previous tentative spin-parity and configuration assignments based on the 𝛽-decay feeding patterns have been supported. A normal odd-even staggering in charge radii of bismuth isotopes with 𝑁>126 has been observed. The new data for the 𝛿⁡⟨𝑟2⟩ of bismuth isotopes allow a study of the isotonic dependencies in the charge radii, revealing jumps in 𝛿⁢⟨𝑟2⟩132,126 and 𝛿⁢⟨𝑟2⟩134,126 at 𝑍 = 84. This pattern could be explained by a sudden onset of octupole deformation at 𝑁 = 132 and 134 when going from polonium (𝑍 = 84) to astatine (𝑍 = 85).

Research Organization:
Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Nuclear Physics (NP)
Grant/Contract Number:
SC0021176
OSTI ID:
3004102
Alternate ID(s):
OSTI ID: 3004106
Journal Information:
Physical Review. C, Journal Name: Physical Review. C Journal Issue: 3 Vol. 112; ISSN 2469-9985; ISSN 2469-9993
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English

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fundamental symmetries
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