中深度束缚轨道在中性碳同位素中的光谱
核实验
2024-07-08 v1 核理论
摘要
钙同位素是研究壳结构和魔数演化的理想系统。尽管表面核子在钙的性质已得到良好研究，但探测中深度束缚核子仍是一个挑战。本文报告了对 Ca 和 Ca 中未束缚态的首次测量，这些态通过 Ca() 反应产生，束流能量约为216 MeV/nucleon，在 RIKEN 射电同位素束造厂进行。我们对这些未束缚态的共振性质、部分横截面和动量分布进行了分析。基于使用失配波冲击近似（DWIA）反应模型的计算，从动量分布中提取了轨道角动量 赋值。Ca 中能激发能为 5516(41) keV 的共振态以及 Ca 中能激发能为 6000(250) keV 的共振态表明显含有 \,=\,3 成分，首次提供了在中性碳同位素中未束缚空洞态 单粒子强度的实验证据。观察到的激发能和横截面指向极度局部化且良好分离的强度分布，在 Ca 中 轨道存在一些碎片化。这些结果与使用有效 GXPF1Bs 相互作用的壳模型计算以及初步计算良好一致，与 的镍同位素实验分布有显著差异。
引用
@article{arxiv.2407.04529,
title = {Spectroscopy of deeply bound orbitals in neutron-rich Ca isotopes},
author = {P. J. Li and J. Lee and P. Doornenbal and S. Chen and S. Wang and A. Obertelli and Y. Chazono and J. D. Holt and B. S. Hu and K. Ogata and Y. Utsuno and K. Yoshida and N. L. Achouri and H. Baba and F. Browne and D. Calvet and F. Château 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 H. N. Liu 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 K. Boretzky and C. Caesar and L. X. Chung and F. Flavigny and S. Franchoo and I. Gasparic and R. -B. Gerst and J. Gibelin and K. I. Hahn and J. Kahlbow and D. Kim and T. Koiwai and Y. Kondo and D. Körper and P. Koseoglou and C. Lehr and B. D. Linh and T. Lokotko and M. MacCormick and K. Miki and K. Moschner and T. Nakamura and S. Y. Park and D. Rossi and E. Sahin and F. Schindler and H. Simon and P-A. Söderström and D. Sohler and S. Takeuchi and H. Toernqvist and J. Tscheuschner and V. Vaquero and V. Wagner 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:2407.04529},
year = {2024}
}
备注
13 pages, 7 figures