28S 中受阻的质子集体性：Z=16 处的可能幻数
核实验
2012-05-30 v2
摘要
利用 53 MeV/核子的库仑激发实验获得了 28S 的约化跃迁概率 B(E2;0 ->2+)。所得 B(E2) 值 181(31) e2fm4 小于基于经验 B(E2) 系统学的预期。通过从镜像核 28Mg 的已知 B(E2) 值评估 M_n 值，确定 28S 中 0+ ->2+ 跃迁的双比 |M_n/M_p|/(N/Z) 为 1.9(2)，表明相对于中子，质子集体性受到阻碍。这些结果表明，在 |T_z|=2 核 28S 中出现了幻数 Z=16。
引用
@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}
}
备注
10 pages, 3 figures. Published in Phys. Rev. Lett (http://link.aps.org/doi/10.1103/PhysRevLett.108.222501)