17C的低能单粒子结构及N=14子壳层闭壳的缺失
核实验
2020-12-30 v1
摘要
通过d(16C, p)转移反应，首次研究了17C束缚态的单粒子结构。测量的角分布证实了位于217 keV和335 keV处的激发态的自旋宇称分别为1/2+和5/2+。这些态的谱因子表现出显著的单粒子特征，与壳模型和粒子-核芯模型计算一致，并且结合它们在能量上的近简并性，为N=14子壳层闭壳的缺失提供了明确证据。在3/2+基态发现的极小谱因子与理论预言一致，并表明ν1d3/2强度由非束缚态承担。由于具有主导的l=0价中子构型及极低的分离能，该1/2+激发态是一个单中子晕候选态。
引用
@article{arxiv.2011.06101,
title = {Low-lying single-particle structure of 17C and the N = 14 sub-shell closure},
author = {X. Pereira-López and B. Fernández-Domínguez and F. Delaunay and N. L. Achouri and N. A. Orr and W. N. Catford and M. Assié and S. Bailey and B. Bastin and Y. Blumenfeld and R. Borcea and M. Caamaño and L. Caceres and E. Clément and A. Corsi and N. Curtis and Q. Deshayes and F. Farget and M. Fisichella and G. de France and S. Franchoo and M. Freer and J. Gibelin and A. Gillibert and G. F. Grinyer and F. Hammache and O. Kamalou and A. Knapton and T. Kokalova and V. Lapoux and J. A. Lay and B. Le Crom and S. Leblond and J. Lois-Fuentes and F. M. Marqués and A. Matta and P. Morfouace and A. M. Moro and T. Otsuka and J. Pancin and L. Perrot and J. Piot and E. Pollacco and D. Ramos and C. Rodríguez-Tajes and T. Roger and F. Rotaru and M. Sénoville and N. de Séréville and R. Smith and O. Sorlin and M. Stanoiu and I. Stefan and C. Stodel and D. Suzuki and T. Suzuki and J. C. Thomas and N. Timofeyuk and M. Vandebrouck and J. Walshe and C. Wheldon},
journal= {arXiv preprint arXiv:2011.06101},
year = {2020}
}
备注
7 pages, 5 figures, Accepted for publication in Physics Letters B