https://doi.org/10.1007/s100500070117
Measurement of the electric quadrupole moments of 26–29Na
1
EP Division, CERN, CH-1211, Geneva 23, Switzerland
2
Institut für Physik, Universität Mainz, D-55099, Mainz, Germany
3
Laboratorium voor Vaste-Stoffysica en Magnetisme, K. U. Leuven, B-3001, Leuven, Belgium
4
Instituut voor Kern- en Stralingsfysica, K. U. Leuven, B-3001, Leuven, Belgium
5
Department of Physics and Astronomy and NSCL, Michigan State University, East Lansing, MI, 48824, USA
Received:
1
February
2000
Published online: 15 May 2000
The nuclear electric quadrupole moments of the isotopes 26Na, 27Na, 28Na and 29Na were measured by β-NMR spectroscopy in single crystals of LiNbO3 and NaNO3. High degrees of nuclear polarization were produced by optical pumping of the sodium atoms in a fast beam with a collinear laser beam. The polarized nuclei were implanted into the crystals and NMR signals were observed in the β-decay asymmetries. Preparatory measurements also yielded improved values for the magnetic moments of 27–31Na and confirmed the spin I = 3/2 for 31Na. The results are discussed in comparison with large-basis shell model calculations.
PACS: 21.10.Ky Electromagnetic moments – / 27.30.+t 20 ≤ A ≤ 38 – / 76.60.-k Nuclear magnetic resonance and relaxation –
© Società Italiana di Fisica and Springer-Verlag, 2000