Measurement of electric quadrupole moments for 31Al using spin polarized RI beams

D. Nagae, K. Asahi, H. Ueno, D. Kameda, M. Takemura, K. Takase, A. Yoshimi, T. Sugimoto, T. Nagatomo, Y. Kobayashi, M. Uchida, K. Shimada, T. Arai, Takeshi Inoue, S. Kagami, N. Hatakeyama

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)


The electromagnetic moment is a sensitive probe to investigate microscopic structure. In order to measure the electromagnetic moment, β-NMR and β-NQR methods are employed taking advantage of the fragment spin polarization produced by the fragmentation reaction. The measurement of the electric quadrupole moment for ground-state 31Al has been been carried out by β-NQR method. Spin-polarized 31Al nuclei were obtained from the fragmentation of 40Ar projectiles, and were implanted in α-Al2O3 stopper. The electric quadrupole moment was deduced from the measured quadrupole coupling constant. The obtained value is Q(31Al) = 104(9) emb.

Original languageEnglish
Title of host publicationProceedings of the 17th International Spin Physics Symposium
Number of pages4
Publication statusPublished - 2007 Sept 24
Event17th International Spin Physics Symposium - Kyoto, Japan
Duration: 2006 Oct 22006 Oct 7

Publication series

NameAIP Conference Proceedings
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616


Other17th International Spin Physics Symposium


  • 31A1
  • Electric quadrupole moment
  • Nuclear structure
  • Spin-polarized radioactive nuclei
  • β-NMR method
  • β-NQR method

ASJC Scopus subject areas

  • Physics and Astronomy(all)


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