Magnetic moment measurements in the semi-magic nuclei 94Ru and 95Rh after recoil implantation into iron and nickel
A. Jungclaus1 - D. Kast1 - K.P. Lieb1 - C. Lingk1 - C. Teich1 - O. Iordanov1 - T. Härtlein2 - D. Schwalm2 - I.P. Johnstone3 - R. Schwengner4
1 II. Physikalisches Institut, Universität Göttingen, Bunsenstrasse 7-9,
D-37073 Göttingen
2 Max-Planck-Institut für Kernphysik, D-69029 Heidelberg, Germany
3 Department of Physics, Queen's University, Kingston, Ontario, K7L 3N6 Canada
4 Institut für Hadronenphysik, FZ Rossendorf, D-01314 Dresden, Germany
Received: 2 June 1999 Communicated by B. Povh
Abstract
The magnetic moments of the 12+ and 11- yrast states in 94Ru and of
the 25/2-, 29/2+, and 35/2+ levels in 95Rh have been measured via the IMPAD
technique. The nuclei were produced in the reaction 58Ni + 40Ca and
recoil-implanted into polarized Ni and Fe hosts. The g-factors were deduced from the
measured time-integral Larmor precessions. The comparison between the experimental results
and large-scale shell model calculations suggests that the 12+ and 11- states in
94Ru and the 25/2- level in 95Rh are pure proton states whereas the 29/2+
and 35/2+ states in 95Rh contain a neutron excitation across the N=50 shell gap.
This interpretation supports the conclusion drawn from recent lifetime measurements.
PACS
21.10.Ky Electromagnetic moments -
21.60.Cs Shell models -
21.60.+j 
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