Quenching of neutron E2 effective charge in neutron-rich nuclei and the ground-state spin-parity of C-17

ISSN
1434-6001
Date Issued
2002
Author(s)
Ogawa, H.
Asahi, K.
Ueno, H.
Sakai, H.
Miyoshi, H.
Kameda, D.
Suzuki, T.
Izumi, H.
Imai, N.
Watanabe, Y. X.
Yoneda, K.
Fukuda, N.
Watanabe, H.
Yoshimi, A.
Sato, W.
Aoi, N.
Nagakura, M.
Suga, T.
Yogo, K.
Goto, A.
Honda, T.
Kobayashi, Y.
Neyens, G.
Teughels, S.
Yoshida, A.
Kubo, T.
Ishihara, N.
Abstract
The electric quadrupole moment of B-17 and the g-factor of C-17 were measured by using the fragmentation-induced nuclear polarization technique combined with the beta-NMR method. The experimental quadrupole moment of B-17 is found strikingly close to that of the neutron closed-shell isotope B-13, indicating a strong quenching of the neutron E2 core-polarization charge. From the result obtained for the C-17 g-factor, we can conclude that the ground-state spin-parity of C-17 is 3/2(+).