Electric quadrupole moment of the neutron-rich 33Al

  • T. Nagatomo
  • K. Shimada
  • K. Asahi
  • D. L. Balabanski
  • J. M. Daugas
  • M. Depuydt
  • M. De Rydt
  • L. Gaudefroy
  • S. Grévy
  • Y. Hasama
  • Y. Ichikawa
  • D. Kameda
  • P. Morel
  • L. Perrot
  • C. Stödel
  • J. C. Thomas
  • W. Vanderheijden
  • N. Vermeulen
  • P. Vingerhoets
  • A. Yoshimi
  • G. Neyens
  • H. Ueno
Regular Article - Experimental Physics

Abstract

The nuclear electric quadrupole moment (Q moment) of the neutron-rich nucleus 33Al (I = 5/2 , T 1/2 = 41 ms) has been measured by the \( \beta\) -ray detected nuclear quadrupole resonance (\( \beta\) -NQR) method for the first time. The 33Al nucleus is considered to be on the border of the island of inversion within which a significant intrusion of the pf orbits occurs across the N = 20 shell gap and the intrusion causes an anomalous enhancement of the Q moment. Polarized 33Al nuclei were produced from 36S (77.5MeV/u beams through the fragmentation process and separated by LISE fragment separator at GANIL. The 33Al nuclei were implanted into a Al2O3 single-crystal plate and the \( \beta\) -NQR spectrum was successfully obtained.

Keywords

Quadrupole Interaction Nuclear Quadrupole Resonance Electric Quadrupole Moment 33Al Nucleus Anomalous Enhancement 

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Copyright information

© SIF, Springer-Verlag Berlin Heidelberg 2009

Authors and Affiliations

  • T. Nagatomo
    • 1
  • K. Shimada
    • 2
  • K. Asahi
    • 3
  • D. L. Balabanski
    • 4
  • J. M. Daugas
    • 5
  • M. Depuydt
    • 6
  • M. De Rydt
    • 6
  • L. Gaudefroy
    • 5
  • S. Grévy
    • 7
  • Y. Hasama
    • 3
  • Y. Ichikawa
    • 1
  • D. Kameda
    • 1
  • P. Morel
    • 5
  • L. Perrot
    • 8
  • C. Stödel
    • 7
  • J. C. Thomas
    • 7
  • W. Vanderheijden
    • 6
  • N. Vermeulen
    • 6
  • P. Vingerhoets
    • 6
  • A. Yoshimi
    • 1
  • G. Neyens
    • 6
  • H. Ueno
    • 1
  1. 1.RIKEN Nishina Center WakoSaitamaJapan
  2. 2.Tohoku UniversityMiyagiJapan
  3. 3.Tokyo Institute of TechnologyTokyoJapan
  4. 4.Institute for Nuclear Research and Nuclear EnergyBulgarian Academy of SciencesSofiaBulgaria
  5. 5.CEA/DIF/DPTA/PNBruyeres le ChatelFrance
  6. 6.Instituut voor Kern- en StralingsfysicaK.U. LeuvenLeuvenBelgium
  7. 7.Grand Accelerateur National d’Ions LourdsCaen codex 5France
  8. 8.Institut de Physique NuclelaireOrsayFrance

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