论文标题
$ n = 82 $ shell闭合$ z = 50 $的第一瞥见，来自中子富含中子的镉同位素和异构体
First glimpse of the $N=82$ shell closure below $Z=50$ from masses of neutron-rich cadmium isotopes and isomers
论文作者
论文摘要
我们通过在Isolde-Cern的Isaltrap光谱仪的质量测量中探测$ n = 82 $核壳封闭。 $^{132} $ cd的新质量提供了$ n = 82 $的第一个值，两次中子外壳间隙低于$ z = 50 $，并确认了$^{132} $ sn的相互增强魔法的现象。使用最近实现的相模成离子 - 循环 - 谐音方法，在$^{129} $ CD中的低凹异构体的排序及其能量被确定。新的实验发现用于测试大规模的壳模，平均场和超越均值场的计算，以及从头算价空间内相似性重新归一化组。
We probe the $N=82$ nuclear shell closure by mass measurements of neutron-rich cadmium isotopes with the ISOLTRAP spectrometer at ISOLDE-CERN. The new mass of $^{132}$Cd offers the first value of the $N=82$, two-neutron shell gap below $Z=50$ and confirms the phenomenon of mutually enhanced magicity at $^{132}$Sn. Using the recently implemented phase-imaging ion-cyclotron-resonance method, the ordering of the low-lying isomers in $^{129}$Cd and their energies are determined. The new experimental findings are used to test large-scale shell-model, mean-field and beyond-mean-field calculations, as well as the ab initio valence-space in-medium similarity renormalization group.
