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Precise nuclear moments of extremely proton-rich nuclus 23 Al |
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| Authors: | T. Nagatomo H. Ueno M. Mihara K. Matsuta A. Yoshimi Y. Ichikawa K. Yamada H. Kawamura A. Ozawa T. Moriguchi Y. Ishibashi K. Asahi M. Uchida K. Suzuki T. Inoue Y. Hasama H. Iijima T. Sumikama M. Fukuda T. Minamisono |
| Affiliation: | 1. RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama, 351-0198, Japan 7. International Christian University, Osawa 3-10-2, Mitaka, Tokyo, 181-8585, Japan 2. Osaka University, Machikaneyama 1-1, Toyonaka, Osaka, 560-0043, Japan 3. University of Tsukuba, Tennodai 1-1-1, Tsukuba, Ibaraki, 305-8577, Japan 4. Tokyo Institute of Technology, Ookayama 2-12-1, Meguro-ku, Tokyo, 152-8550, Japan 5. Tokyo University of Science, Yamazaki 2641, Noda, Chiba, 278-8510, Japan 6. Fukui University of Technology, Gakuen 3-6-1, Fukui, Fukui, 910-8505, Japan |
| Abstract: | Electric quadrupole coupling constant eqQ/h of the extremely proton-rich 23Al (I π ?=?5/2?+?, T 1/2?=?0.47 s) nucleus implanted into an Al2O3 single crystal has been measured for the first time, using the β-ray detecting nuclear quadrupole resonance method (β-NQR) in a high magnetic field. As a preliminary result, the quadrupole coupling constant was determined as |eqQ/h(23Al) |?=?2.66±0.77 MHz. Using the quadrupole coupling constant of 27Al in Al2O3 as a reference, the Q moment of the ground state of 23Al was extracted as |Q(23Al)|?~?160 mb, which is well explained by the shell model calculation in the sd-shell model space with the USD interaction. |
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