在首个 $\nu g_{9/2}$ 壳层中资历是否为部分动力学对称性？
核实验
2018-05-03 v2 核理论
摘要
在 RIKEN 的 RIBF 设施内，EURICA 合作组研究了中壳 镍同位素 Ni 与 Ni 的低能结构。此前未观测到的低能态通过母核 Co 与 Co 的 衰变首次被触及。据此，我们基于资历方案给出了两核直至首个 能级的完整图像。实验结果与壳模型计算进行比较，以界定资历量子数在首个中子 壳层中被保持的程度。我们发现， 态中资历异构性的消失可由多年前所预言的资历四 能级的降低来解释。对于 Ni，新观测到的 态的内部退激模式支持直至自旋 正常资历序的复原。这一性质未被壳模型计算解释，却与近 Ni 处单粒子球形势域的主导相符。
引用
@article{arxiv.1710.11207,
title = {Is Seniority a Partial Dynamic Symmetry in the First $\nu g_{9/2}$ Shell?},
author = {A. I. Morales and G. Benzoni and H. Watanabe and G. de Angelis and S. Nishimura and L. Coraggio and A. Gargano and N. Itaco and T. Otsuka and Y. Tsunoda and P. Van Isacker and F. Browne and R. Daido and P. Doornenbal and Y. Fang and G. Lorusso and Z. Patel and S. Rice and L. Sinclair and P. -A. Söderström and T. Sumikama and J. Wu and Z. Y. Xu and A. Yagi and R. Yokoyama and H. Baba and R. Avigo and F. L. Bello Garrote and N. Blasi and A. Bracco and A. M. Bruce and F. Camera and S. Ceruti and F. C. L. Crespi and M. -C. Delattre and Zs. Dombradi and A. Gottardo and T. Isobe and I. Kojouharov and N. Kurz and I. Kuti and S. Lalkovski and K. Matsui and B. Melon and D. Mengoni and T. Miyazaki and V. Modamio-Hoybjor and S. Momiyama and D. R. Napoli and M. Niikura and R. Orlandi and Zs. Podolyák and P. H. Regan and H. Sakurai and E. Sahin and D. Sohler and H. Schaffner and R. Taniuchi and J. Taprogge and Zs. Vajta and J. J. Valiente-Dobón and O. Wieland and M. Yalcinkaya},
journal= {arXiv preprint arXiv:1710.11207},
year = {2018}
}