Nuclear moments around the Z=40 shell closure: 91mY, 95Zr and 97Nb

Magnetic moments around the Z=40 shell closure have been established using nuclear magnetic resonance on oriented nuclei (NMR/ON) in iron. From the resonance frequencies we established vertical strokeμ(91Y; 9/2+)vertical stroke=5.96(6)μN,vertical stroke μ(95Zr; 5/2+)vertical stroke=1.103(23)μN, vertical strokeμ(97Nb; 9/2+)vertical stroke=6.153(5)μN. From the electric quadrupole alignment of 95Zr+95Nb in a Zr single crystal Q(95Zr)=+0.29(5)b and Q(95Nb)<0 have been derived. The results obtained are discussed using the Nilsson deformed single particle model. It is shown that for certain deformation regions, a measurement of the magnetic moment can give information on the nuclear quadrupole deformation. (orig.)