Large Shape Staggering in Neutron-Deficient Bi Isotopes

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http://hdl.handle.net/10138/337297

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ISOLDE Collaboration , Barzakh , A , Pyykkö , P & Stryjczyk , M 2021 , ' Large Shape Staggering in Neutron-Deficient Bi Isotopes ' , Physical Review Letters , vol. 127 , no. 19 , 192501 . https://doi.org/10.1103/PhysRevLett.127.192501

Title: Large Shape Staggering in Neutron-Deficient Bi Isotopes
Author: ISOLDE Collaboration; Barzakh, A.; Pyykkö, Pekka; Stryjczyk, M.
Contributor organization: Department of Chemistry
Date: 2021-11-05
Language: eng
Number of pages: 7
Belongs to series: Physical Review Letters
ISSN: 0031-9007
DOI: https://doi.org/10.1103/PhysRevLett.127.192501
URI: http://hdl.handle.net/10138/337297
Abstract: The changes in the mean-square charge radius (relative to Bi-209), magnetic dipole, and electric quadrupole moments of Bi-187,Bi-188,Bi-189,Bi-191 were measured using the in-source resonance-ionization spectroscopy technique at ISOLDE (CERN). A large staggering in radii was found in Bi-187,188,189(g), manifested by a sharp radius increase for the ground state of Bi-188 relative to the neighboring Bi-187,189(g). A large isomer shift was also observed for Bi-188(m). Both effects happen at the same neutron number, N = 10(5), 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.
Subject: 116 Chemical sciences
Peer reviewed: Yes
Rights: cc_by
Usage restriction: openAccess
Self-archived version: publishedVersion


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