N = 34 亚壳层闭包有多稳健？$^{52}$Ar 的首次谱学
核实验
2019-03-01 v3 核理论
摘要
在 RIBF 装置上利用 210 MeV/u 的 K(p,2p) 单质子敲除反应，测量了中子数 N = 34 的 Ar 的首次 射线谱学。2 激发能位于 1656(18) keV，在 N 20 的 Ar 同位素中最高。该结果是 N = 34 亚壳层闭包在 Ca 之外、即幻质子数 Z = 20 以下持续存在的首个实验迹象。采用唯象与手征有效场论相互作用的壳模型计算均重现了所测富中子 Ar 同位素的 2 系统学，并支持 Ar 中存在 N = 34 亚壳层闭包。
引用
@article{arxiv.1811.08451,
title = {How Robust is the N = 34 Subshell Closure? First Spectroscopy of $^{52}$Ar},
author = {H. N. Liu and A. Obertelli and P. Doornenbal and C. A. Bertulani and G. Hagen and J. D. Holt and G. R. Jansen and T. D. Morris and A. Schwenk and R. Stroberg and N. Achouri and H. Baba and F. Browne and D. Calvet and F. Château and S. Chen and N. Chiga and A. Corsi and M. L. Cortés and A. Delbart and J. -M. Gheller and A. Giganon and A. Gillibert and C. Hilaire and T. Isobe and T. Kobayashi and Y. Kubota and V. Lapoux and T. Motobayashi and I. Murray and H. Otsu and V. Panin and N. Paul and W. Rodriguez and H. Sakurai and M. Sasano and D. Steppenbeck and L. Stuhl and Y. L. Sun and Y. Togano and T. Uesaka and K. Wimmer and K. Yoneda and O. Aktas and T. Aumann and L. X. Chung and F. Flavigny and S. Franchoo and I. Gašparić and R. -B. Gerst and J. Gibelin and K. I. Hahn and D. Kim and T. Koiwai and Y. Kondo and P. Koseoglou and J. Lee and C. Lehr and B. D. Linh and T. Lokotko and M. MacCormick and K. Moschner and T. Nakamura and S. Y. Park and D. Rossi and E. Sahin and D. Sohler and P. -A. Söderström and S. Takeuchi and H. Törnqvist and V. Vaquero and V. Wagner and S. Wang and V. Werner and X. Xu and H. Yamada and D. Yan and Z. Yang and M. Yasuda and L. Zanetti},
journal= {arXiv preprint arXiv:1811.08451},
year = {2019}
}