Ground-state electric quadrupole moment of Al31

D. Nagae, H. Ueno, D. Kameda, M. Takemura, K. Asahi, K. Takase, A. Yoshimi, T. Sugimoto, K. Shimada, T. Nagatomo, M. Uchida, T. Arai, T. Inoue, S. Kagami, N. Hatakeyama, H. Kawamura, K. Narita, and J. Murata
Phys. Rev. C 79, 027301 – Published 18 February 2009

Abstract

The ground-state electric quadrupole moment of Al31(Iπ=5/2+,T1/2=644(25)ms) has been measured by means of β-ray-detected nuclear magnetic resonance spectroscopy using a spin-polarized Al31 beam produced in the projectile fragmentation reaction. The obtained Q moment, |Qexp(Al31)|=112(32)emb, is in agreement with conventional shell model calculations within the sd valence space. Previous results on the magnetic moment also support the validity of the sd model in this isotope, and thus it is concluded that Al31 is located outside of the island of inversion.

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  • Received 16 October 2008

DOI:https://doi.org/10.1103/PhysRevC.79.027301

©2009 American Physical Society

Authors & Affiliations

D. Nagae1,*, H. Ueno2,3, D. Kameda2, M. Takemura1, K. Asahi1, K. Takase1, A. Yoshimi2, T. Sugimoto2,†, K. Shimada1,‡, T. Nagatomo2, M. Uchida1, T. Arai1, T. Inoue1, S. Kagami1, N. Hatakeyama1, H. Kawamura3,§, K. Narita3, and J. Murata3

  • 1Department of Physics, Tokyo Institute of Technology, 2-12-1 Oh-okayama, Meguro-ku, Tokyo 152-8551, Japan
  • 2RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
  • 3Department of Physics, Rikkyo University, 3-34-1 Nishi-Ikebukuro, Toshima-ku, Tokyo 171-8501, Japan

  • *Present address: Japan Atomic Energy Agency, Tokai-mura, Ibaraki 319-1195, Japan;nagae.daisuke@jaea.go.jp
  • Present address: Japan Synchrotron Radiation Research Institute (JASRI/SPring-8), 1-1-1 Kouto, Sayo, Hyogo 679-5198, Japan.
  • Present address: Cyclotron and Radioisotope Center, Tohoku University, 6-3 Aoba, Aramaki, Aoba-ku, Sendai, Miyagi 980-8578, Japan.
  • §Also at RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan.

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Issue

Vol. 79, Iss. 2 — February 2009

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