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, Akihiro 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 publicationAIP Conference Proceedings
Pages845-848
Number of pages4
Volume915
DOIs
Publication statusPublished - 2007
Externally publishedYes
Event17th International Spin Physics Symposium - Kyoto, Japan
Duration: Oct 2 2006Oct 7 2006

Other

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

Fingerprint

aluminum isotopes
quadrupoles
inversions
moments
neutrons
nuclei
projectiles
fragmentation
isotopes
nuclear magnetic resonance
ground state
single crystals

Keywords

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

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Kameda, D., Ueno, H., Asahi, K., Takemura, M., Nagae, D., Shimada, K., ... 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 AIP Conference Proceedings (Vol. 915, pp. 845-848) https://doi.org/10.1063/1.2750909

Nuclear moment measurements of neutron-rich aluminum isotopes using spin-polarized RI beams : Determination of the boundary of the "island of inversion". / Kameda, D.; Ueno, H.; Asahi, K.; Takemura, M.; Nagae, D.; Shimada, K.; Yoshimi, Akihiro; Kobayashi, Y.; Haseyama, T.; Uchida, M.; Takase, K.; Arai, T.; Inoue, T.; Suda, S.; Murata, J.; Kawamura, H.; Watanabe, H.; Ishihara, M.

AIP Conference Proceedings. Vol. 915 2007. p. 845-848.

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

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 AIP Conference Proceedings. vol. 915, pp. 845-848, 17th International Spin Physics Symposium, Kyoto, Japan, 10/2/06. https://doi.org/10.1063/1.2750909
Kameda D, Ueno H, Asahi K, Takemura M, Nagae D, Shimada K et al. Nuclear moment measurements of neutron-rich aluminum isotopes using spin-polarized RI beams: Determination of the boundary of the "island of inversion". In AIP Conference Proceedings. Vol. 915. 2007. p. 845-848 https://doi.org/10.1063/1.2750909
Kameda, D. ; Ueno, H. ; Asahi, K. ; Takemura, M. ; Nagae, D. ; Shimada, K. ; Yoshimi, Akihiro ; Kobayashi, Y. ; Haseyama, T. ; Uchida, M. ; Takase, K. ; Arai, T. ; Inoue, T. ; Suda, S. ; Murata, J. ; Kawamura, H. ; Watanabe, H. ; Ishihara, M. / Nuclear moment measurements of neutron-rich aluminum isotopes using spin-polarized RI beams : Determination of the boundary of the "island of inversion". AIP Conference Proceedings. Vol. 915 2007. pp. 845-848
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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.",
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author = "D. Kameda and H. Ueno and K. Asahi and M. Takemura and D. Nagae and K. Shimada and Akihiro Yoshimi and Y. Kobayashi and T. Haseyama and M. Uchida and K. Takase and T. Arai and T. Inoue and S. Suda and J. Murata and H. Kawamura and H. Watanabe and M. Ishihara",
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T2 - Determination of the boundary of the "island of inversion"

AU - Kameda, D.

AU - Ueno, H.

AU - Asahi, K.

AU - Takemura, M.

AU - Nagae, D.

AU - Shimada, K.

AU - Yoshimi, Akihiro

AU - Kobayashi, Y.

AU - Haseyama, T.

AU - Uchida, M.

AU - Takase, K.

AU - Arai, T.

AU - Inoue, T.

AU - Suda, S.

AU - Murata, J.

AU - Kawamura, H.

AU - Watanabe, H.

AU - Ishihara, M.

PY - 2007

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N2 - 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.

AB - 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.

KW - β-NMR

KW - Electric quadrupole moment

KW - Nuclear shell structure

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