The European Physical Journal A

, Volume 8, Issue 1, pp 31–40 | Cite as

Measurement of the electric quadrupole moments of 26–29Na

  • M. Keim
  • U. Georg
  • A. Klein
  • R. Neugart
  • M. Neuroth
  • S. Wilbert
  • P. Lievens
  • L. Vermeeren
  • B. A. Brown
  • ISOLDE Collaboration
Article

Abstract

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 

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Copyright information

© Società Italiana di Fisica Springer-Verlag 2000

Authors and Affiliations

  • M. Keim
    • 1
  • U. Georg
    • 2
  • A. Klein
    • 2
  • R. Neugart
    • 2
  • M. Neuroth
    • 2
  • S. Wilbert
    • 2
  • P. Lievens
    • 3
  • L. Vermeeren
    • 4
  • B. A. Brown
    • 5
  • ISOLDE Collaboration
  1. 1.EP DivisionCERNGeneva 23Switzerland
  2. 2.Institut für PhysikUniversität MainzMainzGermany
  3. 3.Laboratorium voor Vaste-Stoffysica en MagnetismeK. U. LeuvenLeuvenBelgium
  4. 4.Instituut voor Kern- en StralingsfysicaK. U. LeuvenLeuvenBelgium
  5. 5.Department of Physics and Astronomy and NSCLMichigan State UniversityEast LansingUSA

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