发表机构
Pusan National University; Institute for Basic Science（釜山国立大学; 基础科学研究院）
机构由 AI 辅助整理，请以论文原文为准。AI 中文总结
该研究采用反对称化分子动力学，阐明了$^{29}$Cl与$^{29}$Mg镜像对的镜像能量差，为$^{29}$Cl的自旋-宇称提出指定，揭示了入侵者态对镜像能量差的影响机制。
AI 中文摘要
为阐明质子未束缚核$^{29}$Cl的镜像能量差（MEDs）及其微观起源，本文采用反对称化分子动力学研究$^{29}$Cl-$^{29}$Mg镜像对的低激发态。计算合理重现了$^{29}$Mg的正常态与入侵者态，同时为$^{29}$Cl提出了备选自旋-宇称指定。$1/2^+$和$3/2^+$态因内禀结构相似，预计形成近简并的基态二重态，MED很小；与之相反，$3/2^-$和$7/2^-$入侵者态呈现大的负MED，分别被指定为约500 keV和1.1 MeV处观测到的共振态，其大MED源于入侵者构型中更强形变与空间延展质子分布相关的库仑能降低。
英文摘要
To clarify the mirror energy differences (MEDs) of the proton-unbound nucleus $^{29}$Cl and their microscopic origins, we investigate the low-lying states of the $^{29}$Cl-$^{29}$Mg mirror pair using antisymmetrized molecular dynamics. The calculation reasonably reproduces the normal and intruder states of $^{29}$Mg, while suggesting alternative spin-parity assignments for $^{29}$Cl. The $1/2^+$ and $3/2^+$ states are predicted to form a nearly degenerate ground-state doublet with a small MED because of their similar intrinsic structures. In contrast, the $3/2^-$ and $7/2^-$ intruder states exhibit large negative MEDs and are assigned to the observed resonances at approximately 500~keV and 1.1~MeV, respectively. Their large MEDs originate from the reduced Coulomb energies associated with the stronger deformation and spatially extended proton distributions in the intruder configurations.
Comments6 pages, 3 figures
