Hindered proton collectivity in 28S: Possible magic number at Z=16
Nuclear Experiment
2012-05-30 v2
Abstract
The reduced transition probability B(E2;0 ->2+) for 28S was obtained experimentally using Coulomb excitation at 53 MeV/nucleon. The resultant B(E2) value 181(31) e2fm4 is smaller than the expectation based on empirical B(E2) systematics. The double ratio |M_n/M_p|/(N/Z) of the 0+ ->2+ transition in 28S was determined to be 1.9(2) by evaluating the M_n value from the known B(E2) value of the mirror nucleus 28Mg, showing the hindrance of proton collectivity relative to that of neutrons. These results indicate the emergence of the magic number Z=16 in the |T_z|=2 nucleus 28S.
Keywords
Cite
@article{arxiv.1204.0920,
title = {Hindered proton collectivity in 28S: Possible magic number at Z=16},
author = {Y. Togano and Y. Yamada and N. Iwasa and K. Yamada and T. Motobayashi and N. Aoi and H. Baba and S. Bishop and X. Cai and P. Doornenbal and D. Fang and T. Furukawa and K. Ieki and T. Kawabata and S. Kanno and N. Kobayashi and Y. Kondo and T. Kuboki and N. Kume and K. Kurita and M. Kurokawa and Y. G. Ma and Y. Matsuo and H. Murakami and M. Matsushita and T. Nakamura and K. Okada and S. Ota and Y. Satou and S. Shimoura and R. Shioda and K. N. Tanaka and S. Takeuchi and W. Tian and H. Wang and J. Wang and K. Yoneda},
journal= {arXiv preprint arXiv:1204.0920},
year = {2012}
}
Comments
10 pages, 3 figures. Published in Phys. Rev. Lett (http://link.aps.org/doi/10.1103/PhysRevLett.108.222501)