Nuclear moment measurements of neutron-rich aluminum isotopes using spin-polarized RI beams: Determination of the boundary of the "island of inversion"

D. Kameda, H. Ueno, K. Asahi, M. Takemura, D. Nagae, K. Shimada, A. Yoshimi, Y. Kobayashi, T. Haseyama, M. Uchida, K. Takase, T. Arai, T. Inoue, S. Suda, J. Murata, H. Kawamura, H. Watanabe, M. Ishihara

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

Abstract

The electric quadrupole moment Q for the ground state of 32Al has been measured using the β-NMR technique. Spin-polarized 32Al nuclei were obtained from the fragmentation of 40Ar projectiles at E/A = 95 MeV/nucleon, and were implanted in a single crystal α-Al 2O3 stopper. The quadrupole moment was deduced from the measured quadrupole coupling constant. The obtained value, Q( 32Alg.s.) = 24(2) mb, was well reproduced by shell model calculations within the sd shell, indicating that 32Al is a normal sd-shell nucleus. The result is in sharp contrast to the strongly deformed nuclei 32Mg and 31Mg neighboring the 32Al isotope.

Original languageEnglish
Title of host publicationProceedings of the 17th International Spin Physics Symposium
Pages845-848
Number of pages4
DOIs
Publication statusPublished - Sep 24 2007
Externally publishedYes
Event17th International Spin Physics Symposium - Kyoto, Japan
Duration: Oct 2 2006Oct 7 2006

Publication series

NameAIP Conference Proceedings
Volume915
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Other

Other17th International Spin Physics Symposium
CountryJapan
CityKyoto
Period10/2/0610/7/06

Keywords

  • Electric quadrupole moment
  • Nuclear shell structure
  • β-NMR

ASJC Scopus subject areas

  • Ecology, Evolution, Behavior and Systematics
  • Ecology
  • Plant Science
  • Physics and Astronomy(all)
  • Nature and Landscape Conservation

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  • Cite this

    Kameda, D., Ueno, H., Asahi, K., Takemura, M., Nagae, D., Shimada, K., Yoshimi, A., Kobayashi, Y., Haseyama, T., Uchida, M., Takase, K., Arai, T., Inoue, T., Suda, S., Murata, J., Kawamura, H., Watanabe, H., & Ishihara, M. (2007). Nuclear moment measurements of neutron-rich aluminum isotopes using spin-polarized RI beams: Determination of the boundary of the "island of inversion". In Proceedings of the 17th International Spin Physics Symposium (pp. 845-848). (AIP Conference Proceedings; Vol. 915). https://doi.org/10.1063/1.2750909