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Re-Evaluation of the Nuclear Magnetic Octupole Moment of ²⁰⁹Bi Li, Jiguang; Gaigalas, Gediminas; Bieroń, Jacek; Ekman, Jörgen; Jönsson, Per; Godefroid, Michel; Froese Fischer, Charlotte

Abstract

We modified the HFS92 code of the GRASP package in order to describe the magnetic octupole hyperfine interaction. To illustrate the utility of the modified code, we carried out state-of-the-art calculations of the electronic factors of the magnetic octupole hyperfine interaction constants for levels in the ground configuration of the Bi atom. The nuclear magnetic octupole moment of the ²⁰⁹Bi isotope was extracted by combining old measurements of the hyperfine structures of 6p³ ⁴S°₃/₂ [Hull, R.; Brink, G. Phys. Rev. A 1970, 1, 685] and ²P°₃/₂ [Landman, D.A.; Lurio, A. Phys. Rev. A 1970, 1, 1330] using the atomic-beam magnetic-resonance technique with our theoretical electronic factors. The present extracted octupole moment was consistent with all the available values but the one obtained in the single-particle nuclear shell model approximation. This observation supports the previous finding that nuclear many-body effects, such as the core polarization, significantly contribute to the nuclear magnetic octupole moment in the case of ²⁰⁹Bi.

Item Metadata

Title
Re-Evaluation of the Nuclear Magnetic Octupole Moment of ²⁰⁹Bi
Creator
Li, Jiguang; Gaigalas, Gediminas; Bieroń, Jacek; Ekman, Jörgen; Jönsson, Per; Godefroid, Michel; Froese Fischer, Charlotte
Publisher
Multidisciplinary Digital Publishing Institute
Date Issued
2022-11-04
Description
We modified the HFS92 code of the GRASP package in order to describe the magnetic octupole hyperfine interaction. To illustrate the utility of the modified code, we carried out state-of-the-art calculations of the electronic factors of the magnetic octupole hyperfine interaction constants for levels in the ground configuration of the Bi atom. The nuclear magnetic octupole moment of the ²⁰⁹Bi isotope was extracted by combining old measurements of the hyperfine structures of 6p³ ⁴S°₃/₂ [Hull, R.; Brink, G. Phys. Rev. A 1970, 1, 685] and ²P°₃/₂ [Landman, D.A.; Lurio, A. Phys. Rev. A 1970, 1, 1330] using the atomic-beam magnetic-resonance technique with our theoretical electronic factors. The present extracted octupole moment was consistent with all the available values but the one obtained in the single-particle nuclear shell model approximation. This observation supports the previous finding that nuclear many-body effects, such as the core polarization, significantly contribute to the nuclear magnetic octupole moment in the case of ²⁰⁹Bi.
Subject
magnetic octupole hyperfine interaction; nuclear octupole moment; Bi; MCDHF method; GRASP package
Genre
Article
Type
Text
Language
eng
Date Available
2025-01-31
Provider
Vancouver : University of British Columbia Library
Rights
CC BY 4.0
DOI
10.14288/1.0447883
URI
http://hdl.handle.net/2429/90256
Affiliation
Science, Faculty of; Non UBC; Computer Science, Department of
Citation
Atoms 10 (4): 132 (2022)
Publisher DOI
10.3390/atoms10040132
Peer Review Status
Reviewed
Scholarly Level
Faculty; Researcher
Rights URI
https://creativecommons.org/licenses/by/4.0/
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CC BY 4.0