Large Shape Staggering in Neutron-Deficient Bi Isotopes
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
Published inPhysical Review Letters
Péru, S. |
Sels, S. |
© Authors, 2021
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.
PublisherAmerican Physical Society (APS)
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Related funder(s)European Commission
The content of the publication reflects only the author’s view. The funder is not responsible for any use that may be made of the information it contains.
Additional information about fundingS. G. acknowledges financial support from FNRS (Belgium). J. G. L. acknowledges financial support by the National Natural Science Foundation of China under Grant No. 11874090. M. St. acknowledges the funding from the European Union’s Horizon 2020 research and innovation program under Grant Agreement No. 771036 (ERC CoG MAIDEN). This work was supported by the Fonds de la Recherche Scientifique (F. R. S.-FNRS) and the Fonds Wetenschappelijk Onderzoek-Vlaanderen (FWO) under the EOS Project No. O022818F, by GOA/2015/010 (BOF KU Leuven), the Interuniversity Attraction Poles Programme initiated by the Belgian Science Policy Office (BriX network P7/12), by the ENSAR2: European Union’s Horizon 2020 research and innovation program under Grant Agreement No. 654002, by the U.K. Science and Technology Facilities Council, by the Slovak Research and Development Agency (Contract No. APVV-18-0268), by the Slovak grant agency VEGA (Contract No. 1/0651/21), by RFBR according to the research project N 19-02-00005, by the Russian Science Foundation (Grant No. 19-72-10019), by RFBR according to the research project N 20-32-70177, by the foundation for the advancement of theoretical physics and mathematics “BASIS” grant according to Projects No. 21-1-2-47-1 and No. 20-1-5-76-1. ...
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