Electromagnetic moments of odd-A 193-203,211Po isotopes

Abstract

Hyperfine splitting parameters have been measured for the neutron-deficient odd-mass polonium isotopes and isomers Po193-203g,m, Po209,211. The measurement was performed at the ISOLDE (CERN) online mass separator using the in-source resonance ionization spectroscopy technique. The magnetic dipole moments Î and spectroscopic electric quadrupole moments QS 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 Î 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

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Item Type:	Article
Authors/Creators:	Seliverstov, M.D. (ms1330@york.ac.uk) Cocolios, T.E. Dexters, W. Andreyev, A.N. https://orcid.org/0000-0003-2828-0262 Antalic, S. Barzakh, A.E. Bastin, B. Büscher, J. Darby, I.G. Fedorov, D.V. Fedosseev, V.N. Flanagan, K.T. Franchoo, S. Huber, G. Huyse, M. Keupers, M. Köster, U. Kudryavtsev, Y. Marsh, B.A. Molkanov, P.L. Page, R.D. Sjödin, A.M. Stefan, I. Van Duppen, P. Venhart, M. Zemlyanoy, S.G.
Copyright, Publisher and Additional Information:	© 2014 American Physical Society. Reproduced in accordance with the publisher's self-archiving policy.
Dates:	Published: 31 March 2014
Institution:	The University of York
Academic Units:	The University of York > Faculty of Sciences (York) > Physics (York)
Depositing User:	Pure (York)
Date Deposited:	07 May 2014 10:00
Last Modified:	19 Sep 2025 23:37
Published Version:	https://doi.org/10.1103/PhysRevC.89.034323
Status:	Published
Refereed:	Yes
Identification Number:	10.1103/PhysRevC.89.034323
Related URLs:	http://www.scopus.com/inward/record.url?...
Open Archives Initiative ID (OAI ID):	oai:eprints.whiterose.ac.uk:78826

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Electromagnetic moments of odd-A 193-203,211Po isotopes

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