Electromagnetic moments of scandium isotopes and N = 28 isotones in the distinctive 0f7/2 orbit
Electromagnetic moments of scandium isotopes and N = 28 isotones in the distinctive 0f7/2 orbit
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钪同位素和 N = 28 同位素在独特 0f7/2 轨道上的电磁矩
DOI：
10.1016/j.physletb.2022.137064
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发表时间：
2022
影响因子：
4.4
通讯作者：
B.
中科院分区：
文献类型：
--
作者：
S. W. Bai;Á. Koszorús;B. S. Hu;X. F. Yang;J. Billowes;C. L. Binnersley;M. L. Bissell;K. Blaum;P. Campbell;B. Cheal;T. E. Cocolios;R. P. de Groote;C. S. Devlin;K. T. Flanagan;R. F. Garcia Ruiz;H. Heylen;J. D. Holt;A. Kanellakopoulos;J. Krämer;V. Lagaki;B.
用共线激光光谱仪在CERN-Isolde上测得49Sc的电四极矩为Q S=−0.159(8)eb，其测量精度提高了近10倍。用Z=21同位素和N=28同位素的电磁矩分别作为价中子和质子填充位于幻数20和28之间的独特的0f7/2轨道，研究了单粒子行为和核子-核子关联。实验数据用有效相互作用的壳层模型计算和基于手性相互作用的从头算价空间介质中相似重整化群计算进行了解释。这些结果突出了核电磁矩对不同类型核子-核子关联的敏感性，并为理论计算的进一步发展建立了一个重要的基准。
The electric quadrupole moment of 49 Sc was measured by collinear laser spectroscopy at CERN-ISOLDE to be Q s=− 0.159 (8) eb, and a nearly tenfold improvement in precision was reached for the electromagnetic moments of 47, 49 Sc. The single-particle behavior and nucleon-nucleon correlations are investigated with the electromagnetic moments of Z= 21 isotopes and N= 28 isotones as valence neutrons and protons fill the distinctive 0 f 7/2 orbit, respectively, located between magic numbers, 20 and 28. The experimental data are interpreted with shell-model calculations using an effective interaction, and ab-initio valence-space in-medium similarity renormalization group calculations based on chiral interactions. These results highlight the sensitivity of nuclear electromagnetic moments to different types of nucleon-nucleon correlations, and establish an important benchmark for further developments of theoretical calculations.