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Quenching of neutron E2 effective charge in neutron-rich nuclei and the ground-state spin-parity of 17C |
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| Authors: | H. Ogawa K. Asahi H. Ueno K. Sakai H. Miyoshi D. Kameda T. Suzuki H. Izumi N. Imai Y.X. Watanabe K. Yoneda N. Fukuda H. Watanabe A. Yoshimi W. Sato N. Aoi M. Nagakura T. Suga K Yogo A. Goto T. Honda Y. Kobayashi W.-D. Schmidt-Ott G. Neyens S. Teughels A. Yoshida T. Kubo M. Ishihara |
| Affiliation: | Department of Physics, Tokyo Institute of Technology, 2-12-1 Oh-okayama, Meguro, Tokyo 152-8551, Japan, JP RIKEN, 2-1 Hirosawa, Wako-shi, Saitama 351-0198, Japan, JP Department of Physics, University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan, JP Zweites Physikalisches Institut, Universit?t G?ttingen, Bunsenstrasse 7-9, D-37073 G?ttingen, Germany, DE Instituut voor Kern- en Stralingsfysica, University of Leuven, Celestijnenlaan 200 D, B-3001 Leuven, Belgium, BE RIKEN-BNL Research Center, Brookhaven National Laboratory, Upton, NY 11973, USA, US |
| Abstract: | The electric quadrupole moment of 17B and the g-factor of 17C were measured by using the fragmentation-induced nuclear polarization technique combined with the β-NMR method. The experimental quadrupole moment of 17B is found strikingly close to that of the neutron closed-shell isotope 13B, indicating a strong quenching of the neutron E2 core-polarization charge. From the result obtained for the 17C g-factor, we can conclude that the ground-state spin-parity of 17C is 3/2+. Received: 1 May 2001 / Accepted: 4 December 2001 |
| Keywords: | PACS. 21.10.Ky Electromagnetic moments – 24.70.+s Polarization phenomena in reactions – 25.70.Mn Projectile and target fragmentation |
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