期刊
PHYSICAL REVIEW LETTERS
卷 128, 期 15, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.128.152501
关键词
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资金
- European Union [654002]
- UK Science and Technology Facilities Council
This study presents a detailed analysis of the relationship between nuclear quadrupole deformation and nuclear size, finding a clear link in palladium isotopes. By measuring and calculating, it is concluded that the strength of pairing correlations has an impact on charge radii and odd-even staggering.
The impact of nuclear deformation can been seen in the systematics of nuclear charge radii, with radii generally expanding with increasing deformation. In this Letter, we present a detailed analysis of the precise relationship between nuclear quadrupole deformation and the nuclear size. Our approach combines the first measurements of the changes in the mean-square charge radii of well-deformed palladium isotopes between A 1/4 98 and A 1/4 118 with nuclear density functional calculations using Fayans functionals, specifically Fy(std) and Fyo Delta r, HFB thorn , and the UNEDF2 functional. The changes in mean-square charge radii are extracted from collinear laser spectroscopy measurements on the 4d95s 3D3 -> 4d95p 3P2 atomic transition. The analysis of the Fayans functional calculations reveals a clear link between a good reproduction of the charge radii for the neutron-rich Pd isotopes and the overestimated odd-even staggering: Both aspects can be attributed to the strength of the pairing correlations in the particular functional which we employ.
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