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Electromagnetic moments of odd-A Po-193-203,Po-211 isotopes
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2014 (English)In: Physical Review C. Nuclear Physics, ISSN 0556-2813, E-ISSN 1089-490X, Vol. 89, no 3, 034323- p.Article in journal (Refereed) Published
Abstract [en]

Hyperfine splitting parameters have been measured for the neutron-deficient odd-mass polonium isotopes and isomers Po-193-203(g,m), Po-209,Po-211. The measurement was performed at the ISOLDE (CERN) online mass separator using the in-source resonance ionization spectroscopy technique. The magnetic dipole moments mu and spectroscopic electric quadrupole moments Q(S) have been deduced. Their implication for the understanding of nuclear structure in the vicinity of the closed proton shell at Z = 82 and the neutron mid-shell at N = 104 is discussed. For the most neutron-deficient nuclei (A = 193,195,197), a deviation of mu and QS from the nearly constant values for heavier polonium nuclei was observed. Particle-plus-rotor calculations with static oblate deformation describe the electromagnetic moments for these nuclei well, provided a gradual increase of a mean deformation when going to lighter masses is assumed for the polonium nuclei with A < 198.

Place, publisher, year, edition, pages
2014. Vol. 89, no 3, 034323- p.
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Physical Sciences
URN: urn:nbn:se:kth:diva-145605DOI: 10.1103/PhysRevC.89.034323ISI: 000334294500002ScopusID: 2-s2.0-84898777275OAI: diva2:721602

QC 20140604

Available from: 2014-06-04 Created: 2014-05-23 Last updated: 2014-06-04Bibliographically approved

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Sjödin, Marica
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