Measurement of the electric quadrupole moment of 32Al

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

doi:10.1016/j.physletb.2007.01.063

Measurement of the electric quadrupole moment of ³²Al

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

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

23 Citations (Scopus)

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-Al₂O₃ stopper. The quadrupole moment was deduced from the measured quadrupole coupling constant. The obtained value, | Q (³²Al_g.s.) | = 24 (2) mb, is remarkably small as compared with other Al isotopes, but is well explained by shell model calculations within the sd shell. The present result indicates that ³²Al has a normal sd-shell structure, in contrast to the neighboring N = 19 isotone ³¹Mg for which a strongly deformed intruder ground state has been reported to occur.

Original language	English
Pages (from-to)	93-97
Number of pages	5
Journal	Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume	647
Issue number	2-3
DOIs	https://doi.org/10.1016/j.physletb.2007.01.063
Publication status	Published - 5 Apr 2007

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Kameda, D., Ueno, H., Asahi, K., Takemura, M., Yoshimi, A., Haseyama, T., Uchida, M., Shimada, K., Nagae, D., Kijima, G., Arai, T., Takase, K., Suda, S., Inoue, T., Murata, J., Kawamura, H., Kobayashi, Y., Watanabe, H., & Ishihara, M. (2007). Measurement of the electric quadrupole moment of ³²Al. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 647(2-3), 93-97. https://doi.org/10.1016/j.physletb.2007.01.063

@article{2e61be8ddc3948ac9086d3df238bae50,

title = "Measurement of the electric quadrupole moment of 32Al",

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-Al2O3 stopper. The quadrupole moment was deduced from the measured quadrupole coupling constant. The obtained value, | Q (32Alg.s.) | = 24 (2) mb, is remarkably small as compared with other Al isotopes, but is well explained by shell model calculations within the sd shell. The present result indicates that 32Al has a normal sd-shell structure, in contrast to the neighboring N = 19 isotone 31Mg for which a strongly deformed intruder ground state has been reported to occur.",

keywords = "Electric quadrupole moment of Al, Island of inversion, Nuclear deformation, Projectile fragmentation, β-NMR",

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

year = "2007",

month = apr,

day = "5",

doi = "10.1016/j.physletb.2007.01.063",

language = "English",

volume = "647",

pages = "93--97",

journal = "Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics",

issn = "0370-2693",

publisher = "Elsevier B.V.",

number = "2-3",

}

Kameda, D, Ueno, H, Asahi, K, Takemura, M, Yoshimi, A, Haseyama, T, Uchida, M, Shimada, K, Nagae, D, Kijima, G, Arai, T, Takase, K, Suda, S, Inoue, T, Murata, J, Kawamura, H, Kobayashi, Y, Watanabe, H & Ishihara, M 2007, 'Measurement of the electric quadrupole moment of ³²Al', Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, vol. 647, no. 2-3, pp. 93-97. https://doi.org/10.1016/j.physletb.2007.01.063

TY - JOUR

T1 - Measurement of the electric quadrupole moment of 32Al

AU - Kameda, D.

AU - Ueno, H.

AU - Asahi, K.

AU - Takemura, M.

AU - Yoshimi, A.

AU - Haseyama, T.

AU - Uchida, M.

AU - Shimada, K.

AU - Nagae, D.

AU - Kijima, G.

AU - Arai, T.

AU - Takase, K.

AU - Suda, S.

AU - Inoue, T.

AU - Murata, J.

AU - Kawamura, H.

AU - Kobayashi, Y.

AU - Watanabe, H.

AU - Ishihara, M.

PY - 2007/4/5

Y1 - 2007/4/5

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-Al2O3 stopper. The quadrupole moment was deduced from the measured quadrupole coupling constant. The obtained value, | Q (32Alg.s.) | = 24 (2) mb, is remarkably small as compared with other Al isotopes, but is well explained by shell model calculations within the sd shell. The present result indicates that 32Al has a normal sd-shell structure, in contrast to the neighboring N = 19 isotone 31Mg for which a strongly deformed intruder ground state has been reported to occur.

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-Al2O3 stopper. The quadrupole moment was deduced from the measured quadrupole coupling constant. The obtained value, | Q (32Alg.s.) | = 24 (2) mb, is remarkably small as compared with other Al isotopes, but is well explained by shell model calculations within the sd shell. The present result indicates that 32Al has a normal sd-shell structure, in contrast to the neighboring N = 19 isotone 31Mg for which a strongly deformed intruder ground state has been reported to occur.

KW - Electric quadrupole moment of Al

KW - Island of inversion

KW - Nuclear deformation

KW - Projectile fragmentation

KW - β-NMR

UR - http://www.scopus.com/inward/record.url?scp=33947148999&partnerID=8YFLogxK

U2 - 10.1016/j.physletb.2007.01.063

DO - 10.1016/j.physletb.2007.01.063

M3 - Article

SN - 0370-2693

VL - 647

SP - 93

EP - 97

JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

IS - 2-3

ER -

Measurement of the electric quadrupole moment of ³²Al

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