朝$^{60}$Ca方向的$N=40$同中子异位素的壳层演化：首次对$^{62}$Ti的谱学研究
核实验
2019-12-18 v1 核理论
摘要
在放射性同位素束工厂以约200 MeV/u的VTi反应布居了同中子异位素Ti的激发态，并利用射线谱学进行了研究。此处首次观测到的和跃迁能量表明Ti的形变基态。这些能量相较于相邻的Cr和Fe同中子异位素有所升高，暗示四极集体性略有减小。当前测量被基于有效相互作用的大规模壳模型计算很好地重现，而第一性原理（ab initio）及超越平均场的计算尚不能重现我们的发现。对Ti的壳模型计算显示了四个中子跨越能隙激发的主导组态。同样，它们表明反转岛向下延伸至，从而不支持难以捉摸的Ca可能具有的双幻核特性。
引用
@article{arxiv.1912.07887,
title = {Shell evolution of $N=40$ isotones towards $^{60}$Ca: First spectroscopy of $^{62}$Ti},
author = {M. L. Cortés and W. Rodriguez and P. Doornenbal and A. Obertelli and J. D. Holt and S. M. Lenzi and J. Menéndez and F. Nowacki and K. Ogata and A. Poves and T. R. Rodríguez and A. Schwenk and J. Simonis and S. R. Stroberg and K. Yoshida and L. Achouri and H. Baba and F. Browne and D. Calvet and F. Château and S. Chen and N. Chiga and A. Corsi 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 H. N. Liu and T. Motobayashi and I. Murray and H. Otsu and V. Panin and N. Paul 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. Toernqvist 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:1912.07887},
year = {2019}
}