Exploring the role of high- j configurations in collective observables through the Coulomb excitation of Cd106
Exploring the role of high- j configurations in collective observables through the Coulomb excitation of Cd106
复制标题
通过 Cd106 的库仑激发探索高 j 配置在集体可观测量中的作用
DOI：
10.1103/physrevc.103.l051301
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发表时间：
2021
影响因子：
3.1
通讯作者：
Hjorth-Jensen, M.
中科院分区：
文献类型：
--
作者：
Rhodes, D.;Brown, B. A.;Henderson, J.;Gade, A.;Ash, J.;Bender, P. C.;Elder, R.;Elman, B.;Grinder, M.;Hjorth-Jensen, M.
的形状和集体的研究通过亚势垒能量库仑激发实验在国家超导回旋加速器实验室再加速器设施使用JANUS设置。发现低能级之间的过渡矩阵元素与所采用的值一致，并首次提取了高能级的形状和集体性信息。局部优化的大尺度壳模型计算被发现可以很好地描述跃迁强度，但未能再现光谱四极矩。旋转不变量和归一化四极矩的分析表明，这可能是由于一个显着程度的三轴性，其中没有捕获本壳模型计算。对Fe同位素（低于幻数两个质子）的类似计算揭示了高中子组态对于描述重Fe和Cd同位素（低于幻数两个质子）四极矩的关键作用，但这种效应不足以解释的形状，为理解核结构带来了难题。
The shape and collectivity ofwas investigated via a sub-barrier-energy Coulomb excitation experiment performed at the National Superconducting Cyclotron Laboratory Re-accelerator facility using the JANUS setup. Transition matrix elements between low-lying states were found to agree with adopted values, and information on the shape and collectivity of higher-lying states was extracted for the first time. Locally optimized large-scale shell-model calculations were found to describe well thetransition strengths but failed to reproduce the spectroscopic quadrupole moments. An analysis of therotational invariants and the normalized quadrupole momentindicates that this may be due to a significant degree of triaxiality inwhich is not captured by the present shell-model calculations. Analogous calculations for the Fe isotopes (two protons below themagic number) reveal the critical role of high-neutron configurations for the description of quadrupole moments in the heavy Fe and Cd isotopes (two protons below magic), but this effect is insufficient to explain the shape of, posing a puzzle for the understanding of nuclear structure towards.