|
Author(s)
|
Geldhof, S (Jyvaskyla U. ; Leuven U.) ; Kortelainen, M (Jyvaskyla U.) ; Beliuskina, O (Jyvaskyla U.) ; Campbell, P (Manchester U.) ; Caceres, L (GANIL) ; Cañete, L (Jyvaskyla U.) ; Cheal, B (Liverpool U.) ; Chrysalidis, K (CERN) ; Devlin, C S (Liverpool U.) ; de Groote, R P (Jyvaskyla U.) ; de Roubin, A (Jyvaskyla U.) ; Eronen, T (Jyvaskyla U.) ; Ge, Z (Jyvaskyla U.) ; Gins, W (Jyvaskyla U.) ; Koszorus, A (Liverpool U.) ; Kujanpää, S (Jyvaskyla U.) ; Nesterenko, D (Jyvaskyla U.) ; Ortiz-Cortes, A (Jyvaskyla U. ; GANIL) ; Pohjalainen, I (Jyvaskyla U. ; Darmstadt, GSI) ; Moore, I D (Jyvaskyla U.) ; Raggio, A (Jyvaskyla U.) ; Reponen, M (Jyvaskyla U.) ; Romero, J (Jyvaskyla U. ; Liverpool U.) ; Sommer, F (Darmstadt, GSI) |
|
Abstract
| 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=98 and A=118 with nuclear density functional calculations using Fayans functionals, specifically Fy(std) and Fy(Δr,HFB), and the UNEDF2 functional. The changes in mean-square charge radii are extracted from collinear laser spectroscopy measurements on the 4d95s D33→4d95p P23 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. |