Magnetic moment and electric quadrupole moment of the 18N ground state

H. Ogawa; K. Asahi; K. Sakai; A. Yoshimi; M. Tsuda; Y. Uchiyama; T. Suzuki; K. Suzuki; N. Kurokawa; M. Adachi; H. Izumi; H. Ueno; T. Shimoda; S. Tanimoto; N. Takahashi; W. D. Schmidt-Ott; M. Schäfer; S. Fukuda; A. Yoshida; M. Notani; T. Kubo; H. Okuno; H. Sato; N. Aoi; K. Yoneda; H. Iwasaki; N. Fukuda; N. Fukunishi; M. Ishihara; H. Miyatake

doi:10.1016/S0370-2693(99)00219-1

Magnetic moment and electric quadrupole moment of the ¹⁸N ground state

H. Ogawa, K. Asahi, K. Sakai, A. Yoshimi, M. Tsuda, Y. Uchiyama, T. Suzuki, K. Suzuki, N. Kurokawa, M. Adachi, H. Izumi, H. Ueno, T. Shimoda, S. Tanimoto, N. Takahashi, W. D. Schmidt-Ott, M. Schäfer, S. Fukuda, A. Yoshida, M. NotaniT. Kubo, H. Okuno, H. Sato, N. Aoi, K. Yoneda, H. Iwasaki, N. Fukuda, N. Fukunishi, M. Ishihara, H. Miyatake

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

35 Citations (Scopus)

Abstract

The magnetic moment and electric quadrupole moment of a neutron-rich nucleus ¹⁸N have been determined by the β-NMR method, taking advantage of the fragment spin polarization induced in the intermediate-energy projectile fragmentation reaction. To assure the existence of a sufficient polarization prior to the resonance search, a scheme of polarization measurement by means of an adiabatic field rotation has been developed and successfully incorporated in the β-NMR experiment. From the observed resonance in a R stopper the magnetic moment for the ¹⁸N ground state has been determined to be | μ| = 0.3279 ± 0.0013μN. The ¹⁸N fragments have also been implanted in a single crystal Mg stopper, and from the observed quadrupole frequency |eqQ/h| = 73.2 ± 1.4 kHz, the electric quadrupole moment |Q| = 12.3 ± 1.2 mb has been deduced. The obtained μ and Q are compared with shell model calculations.

Original language	English
Pages (from-to)	11-18
Number of pages	8
Journal	Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume	451
Issue number	1-2
DOIs	https://doi.org/10.1016/S0370-2693(99)00219-1
Publication status	Published - 1999
Externally published	Yes

Keywords

Effective charge
Electric quadrupole moment
Magnetic moment
N ground state
Neutron-rich nucle
Projectile fragmentation
Shell model
Spin polarization
β-NMR

ASJC Scopus subject areas

Nuclear and High Energy Physics

Access to Document

10.1016/S0370-2693(99)00219-1

Cite this

Ogawa, H., Asahi, K., Sakai, K., Yoshimi, A., Tsuda, M., Uchiyama, Y., Suzuki, T., Suzuki, K., Kurokawa, N., Adachi, M., Izumi, H., Ueno, H., Shimoda, T., Tanimoto, S., Takahashi, N., Schmidt-Ott, W. D., Schäfer, M., Fukuda, S., Yoshida, A., ... Miyatake, H. (1999). Magnetic moment and electric quadrupole moment of the ¹⁸N ground state. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 451(1-2), 11-18. https://doi.org/10.1016/S0370-2693(99)00219-1

Magnetic moment and electric quadrupole moment of the ¹⁸N ground state. / Ogawa, H.; Asahi, K.; Sakai, K.; Yoshimi, A.; Tsuda, M.; Uchiyama, Y.; Suzuki, T.; Suzuki, K.; Kurokawa, N.; Adachi, M.; Izumi, H.; Ueno, H.; Shimoda, T.; Tanimoto, S.; Takahashi, N.; Schmidt-Ott, W. D.; Schäfer, M.; Fukuda, S.; Yoshida, A.; Notani, M.; Kubo, T.; Okuno, H.; Sato, H.; Aoi, N.; Yoneda, K.; Iwasaki, H.; Fukuda, N.; Fukunishi, N.; Ishihara, M.; Miyatake, H.

In: Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, Vol. 451, No. 1-2, 1999, p. 11-18.

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

Ogawa, H, Asahi, K, Sakai, K, Yoshimi, A, Tsuda, M, Uchiyama, Y, Suzuki, T, Suzuki, K, Kurokawa, N, Adachi, M, Izumi, H, Ueno, H, Shimoda, T, Tanimoto, S, Takahashi, N, Schmidt-Ott, WD, Schäfer, M, Fukuda, S, Yoshida, A, Notani, M, Kubo, T, Okuno, H, Sato, H, Aoi, N, Yoneda, K, Iwasaki, H, Fukuda, N, Fukunishi, N, Ishihara, M & Miyatake, H 1999, 'Magnetic moment and electric quadrupole moment of the ¹⁸N ground state', Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, vol. 451, no. 1-2, pp. 11-18. https://doi.org/10.1016/S0370-2693(99)00219-1

Ogawa, H. ; Asahi, K. ; Sakai, K. ; Yoshimi, A. ; Tsuda, M. ; Uchiyama, Y. ; Suzuki, T. ; Suzuki, K. ; Kurokawa, N. ; Adachi, M. ; Izumi, H. ; Ueno, H. ; Shimoda, T. ; Tanimoto, S. ; Takahashi, N. ; Schmidt-Ott, W. D. ; Schäfer, M. ; Fukuda, S. ; Yoshida, A. ; Notani, M. ; Kubo, T. ; Okuno, H. ; Sato, H. ; Aoi, N. ; Yoneda, K. ; Iwasaki, H. ; Fukuda, N. ; Fukunishi, N. ; Ishihara, M. ; Miyatake, H. / Magnetic moment and electric quadrupole moment of the ¹⁸N ground state. In: Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics. 1999 ; Vol. 451, No. 1-2. pp. 11-18.

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title = "Magnetic moment and electric quadrupole moment of the 18N ground state",

abstract = "The magnetic moment and electric quadrupole moment of a neutron-rich nucleus 18N have been determined by the β-NMR method, taking advantage of the fragment spin polarization induced in the intermediate-energy projectile fragmentation reaction. To assure the existence of a sufficient polarization prior to the resonance search, a scheme of polarization measurement by means of an adiabatic field rotation has been developed and successfully incorporated in the β-NMR experiment. From the observed resonance in a R stopper the magnetic moment for the 18N ground state has been determined to be | μ| = 0.3279 ± 0.0013μN. The 18N fragments have also been implanted in a single crystal Mg stopper, and from the observed quadrupole frequency |eqQ/h| = 73.2 ± 1.4 kHz, the electric quadrupole moment |Q| = 12.3 ± 1.2 mb has been deduced. The obtained μ and Q are compared with shell model calculations.",

keywords = "Effective charge, Electric quadrupole moment, Magnetic moment, N ground state, Neutron-rich nucle, Projectile fragmentation, Shell model, Spin polarization, β-NMR",

author = "H. Ogawa and K. Asahi and K. Sakai and A. Yoshimi and M. Tsuda and Y. Uchiyama and T. Suzuki and K. Suzuki and N. Kurokawa and M. Adachi and H. Izumi and H. Ueno and T. Shimoda and S. Tanimoto and N. Takahashi and Schmidt-Ott, {W. D.} and M. Sch{\"a}fer and S. Fukuda and A. Yoshida and M. Notani and T. Kubo and H. Okuno and H. Sato and N. Aoi and K. Yoneda and H. Iwasaki and N. Fukuda and N. Fukunishi and M. Ishihara and H. Miyatake",

note = "Funding Information: The authors wish to thank the staffs of the RIKEN Ring Cyclotron for their support during the experiment. They would like to express special thanks to Dr. A. Saiki for useful help and advice with crystallographic analysis of the Mg samples. Two of the authors, N.A. and K.Y., are grateful to Research Fellowships of the Japan Society of the Promotion of Science for Young Scientists for supporting this research. S.F., H.S. and M.N. acknowledge the support by the Special Researchers' Basic Program of Science and Technology Agency of Japan. This work was partly supported by a Grant-in-Aid for Scientific Research from the Ministry of Education, Science and Culture.",

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T1 - Magnetic moment and electric quadrupole moment of the 18N ground state

AU - Ogawa, H.

AU - Asahi, K.

AU - Sakai, K.

AU - Yoshimi, A.

AU - Tsuda, M.

AU - Uchiyama, Y.

AU - Suzuki, T.

AU - Suzuki, K.

AU - Kurokawa, N.

AU - Adachi, M.

AU - Izumi, H.

AU - Ueno, H.

AU - Shimoda, T.

AU - Tanimoto, S.

AU - Takahashi, N.

AU - Schmidt-Ott, W. D.

AU - Schäfer, M.

AU - Fukuda, S.

AU - Yoshida, A.

AU - Notani, M.

AU - Kubo, T.

AU - Okuno, H.

AU - Sato, H.

AU - Aoi, N.

AU - Yoneda, K.

AU - Iwasaki, H.

AU - Fukuda, N.

AU - Fukunishi, N.

AU - Ishihara, M.

AU - Miyatake, H.

N1 - Funding Information: The authors wish to thank the staffs of the RIKEN Ring Cyclotron for their support during the experiment. They would like to express special thanks to Dr. A. Saiki for useful help and advice with crystallographic analysis of the Mg samples. Two of the authors, N.A. and K.Y., are grateful to Research Fellowships of the Japan Society of the Promotion of Science for Young Scientists for supporting this research. S.F., H.S. and M.N. acknowledge the support by the Special Researchers' Basic Program of Science and Technology Agency of Japan. This work was partly supported by a Grant-in-Aid for Scientific Research from the Ministry of Education, Science and Culture.

PY - 1999

Y1 - 1999

N2 - The magnetic moment and electric quadrupole moment of a neutron-rich nucleus 18N have been determined by the β-NMR method, taking advantage of the fragment spin polarization induced in the intermediate-energy projectile fragmentation reaction. To assure the existence of a sufficient polarization prior to the resonance search, a scheme of polarization measurement by means of an adiabatic field rotation has been developed and successfully incorporated in the β-NMR experiment. From the observed resonance in a R stopper the magnetic moment for the 18N ground state has been determined to be | μ| = 0.3279 ± 0.0013μN. The 18N fragments have also been implanted in a single crystal Mg stopper, and from the observed quadrupole frequency |eqQ/h| = 73.2 ± 1.4 kHz, the electric quadrupole moment |Q| = 12.3 ± 1.2 mb has been deduced. The obtained μ and Q are compared with shell model calculations.

AB - The magnetic moment and electric quadrupole moment of a neutron-rich nucleus 18N have been determined by the β-NMR method, taking advantage of the fragment spin polarization induced in the intermediate-energy projectile fragmentation reaction. To assure the existence of a sufficient polarization prior to the resonance search, a scheme of polarization measurement by means of an adiabatic field rotation has been developed and successfully incorporated in the β-NMR experiment. From the observed resonance in a R stopper the magnetic moment for the 18N ground state has been determined to be | μ| = 0.3279 ± 0.0013μN. The 18N fragments have also been implanted in a single crystal Mg stopper, and from the observed quadrupole frequency |eqQ/h| = 73.2 ± 1.4 kHz, the electric quadrupole moment |Q| = 12.3 ± 1.2 mb has been deduced. The obtained μ and Q are compared with shell model calculations.

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KW - Neutron-rich nucle

KW - Projectile fragmentation

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