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Phys. Rev. C 65, 024315 (2002) [10 pages]

Magnetic moments of 68Cug,m and 70Cug,m1,m2 nuclei measured by in-source laser spectroscopy

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L. Weissman*, U. Köster, R. Catherall, S. Franchoo, U. Georg, and O. Jonsson
ISOLDE, CERN, 1211 Genève 23, Switzerland

V. N. Fedoseyev and V. I. Mishin
Institute of Spectroscopy, Russian Academy of Sciences, RU-142190 Troitsk, Russia

M. D. Seliverstov
Petersburg Nuclear Physics Institute, 188350, Gatchina, St. Petersburg, Russia

J. Van Roosbroeck, S. Gheysen, M. Huyse, K. Kruglov, G. Neyens, and P. Van Duppen
Instituut voor Kern-en Stralingsfysica, University of Leuven, B-3001 Leuven, Belgium

(IS365 Collaboration and ISOLDE Collaboration)

Received 18 September 2000; revised 13 September 2001; published 16 January 2002

We have obtained information on the atomic hyperfine splitting and, hence, on magnetic moments in neutron-rich 68,70Cu isotopes by scanning the frequency of the narrow-band laser of the first excitation step in the resonance ionization laser ion source. The deduced magnetic moments are μ(68Cug,Iπ=1+)=+2.48(2)(7)μN, μ(68Cum,Iπ=6-)=+1.24(4)(6)μN, and μ(70Cum2,Iπ=1+)=+1.86(4)(6)μN, μ[70Cug,Iπ=(6-)]=(+)1.50(7)(8)μN. The results of the scans analysis points out the existence of a new isomer, 70Cum1. Its deduced magnetic moment is (-)3.50(7)(11)μN, in good agreement with the Iπ=3- assignment. The method of in-source atomic spectroscopy, as well as the analysis of the obtained data, is described. The results are discussed in terms of single-particle configurations coupled to the 68Ni core.

© 2002 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevC.65.024315
DOI:
10.1103/PhysRevC.65.024315
PACS:
21.10.Ky, 29.25.Rm

*Corresponding author. Email address: leonid.weissman@cern.ch

 
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