A1 Journal article (refereed)
Large Shape Staggering in Neutron-Deficient Bi Isotopes (2021)

Barzakh, A., Andreyev, A. N., Raison, C., Cubiss, J. G., Van Duppen, P., Péru, S., Hilaire, S., Goriely, S., Andel, B., Antalic, S., Al Monthery, M., Berengut, J. C., Bieroń, J., Bissell, M. L., Borschevsky, A., Chrysalidis, K., Cocolios, T. E., Day Goodacre, T., Dognon, J.-P., . . . Zaitsevskii, A. V. (2021). Large Shape Staggering in Neutron-Deficient Bi Isotopes. Physical Review Letters, 127(9), Article 192501. https://doi.org/10.1103/PhysRevLett.127.192501

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Publication details

All authors or editors: Barzakh, A.; Andreyev, A. N.; Raison, C.; Cubiss, J. G.; Van Duppen, P.; Péru, S.; Hilaire, S.; Goriely, S.; Andel, B.; Antalic, S.; et al.

Journal or series: Physical Review Letters

ISSN: 0031-9007

eISSN: 1079-7114

Publication year: 2021

Publication date: 02/11/2021

Volume: 127

Issue number: 9

Article number: 192501

Publisher: American Physical Society (APS)

Publication country: United States

Publication language: English

DOI: https://doi.org/10.1103/PhysRevLett.127.192501

Publication open access: Openly available

Publication channel open access: Partially open access channel

Publication is parallel published (JYX): https://jyx.jyu.fi/handle/123456789/78813

Abstract

The changes in the mean-square charge radius (relative to 209Bi), magnetic dipole, and electric quadrupole moments of 187;188;189;191Bi were measured using the in-source resonance-ionization spectroscopy technique at ISOLDE (CERN). A large staggering in radii was found in 187;188;189Big, manifested by a sharp radius increase for the ground state of 188Bi relative to the neighboring 187;189Big. A large isomer shift was also observed for 188Bim. Both effects happen at the same neutron number, N ¼ 105, where the shape staggering and a similar isomer shift were observed in the mercury isotopes. Experimental results are reproduced by mean-field calculations where the ground or isomeric states were identified by the blocked quasiparticle configuration compatible with the observed spin, parity, and magnetic moment.

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Ministry reporting: Yes

Reporting Year: 2021

JUFO rating: 3