| Article | |
| Title | Evidence of a sudden increase in the nuclear size of proton-rich silver-96 |
| Author(s) | Reponen, M (Jyvaskyla U.) ; de Groote, R P (Jyvaskyla U.) ; Al Ayoubi, L (Jyvaskyla U. ; IJCLab, Orsay) ; Beliuskina, O (Jyvaskyla U.) ; Bissell, M L (Manchester U.) ; Campbell, P (Manchester U.) ; Cañete, L (Surrey U.) ; Cheal, B (Liverpool U.) ; Chrysalidis, K (CERN) ; Delafosse, C (Jyvaskyla U. ; IJCLab, Orsay) ; de Roubin, A (Jyvaskyla U. ; CENBG, Gradignan) ; Devlin, C S (Liverpool U.) ; Eronen, T (Jyvaskyla U.) ; Garcia Ruiz, R F (MIT) ; Geldhof, S (Jyvaskyla U. ; Leuven U.) ; Gins, W (Jyvaskyla U.) ; Hukkanen, M (Jyvaskyla U. ; CENBG, Gradignan) ; Imgram, P (Darmstadt, Tech. U.) ; Kankainen, A (Jyvaskyla U.) ; Kortelainen, M (Jyvaskyla U.) ; Koszorús, Á (Liverpool U.) ; Kujanpää, S (Jyvaskyla U.) ; Mathieson, R (Liverpool U.) ; Nesterenko, D A (Jyvaskyla U.) ; Pohjalainen, I (Jyvaskyla U. ; Darmstadt, GSI) ; Vilén, M (Jyvaskyla U. ; CERN) ; Zadvornaya, A (Jyvaskyla U.) ; Moore, I D (Jyvaskyla U.) |
| Publication | 2021 |
| Number of pages | 8 |
| In: | Nature Commun. 12 (2021) 4596 |
| DOI | 10.1038/s41467-021-24888-x |
| Subject category | Nuclear Physics - Experiment |
| Abstract | Understanding the evolution of the nuclear charge radius is one of the long-standing challenges for nuclear theory. Recently, density functional theory calculations utilizing Fayans functionals have successfully reproduced the charge radii of a variety of exotic isotopes. However, difficulties in the isotope production have hindered testing these models in the immediate region of the nuclear chart below the heaviest self-conjugate doubly-magic nucleus $^{100}$Sn, where the near-equal number of protons $(Z)$ and neutrons $(N)$ lead to enhanced neutron-proton pairing. Here, we present an optical excursion into this region by crossing the $N = 50$ magic neutron number in the silver isotopic chain with the measurement of the charge radius of $^{96}$Ag $(N = 49)$. The results provide a challenge for nuclear theory: calculations are unable to reproduce the pronounced discontinuity in the charge radii as one moves below $N = 50$. The technical advancements in this work open the $N = Z$ region below $^{100}$Sn for further optical studies, which will lead to more comprehensive input for nuclear theory development. |
| Copyright/License | CC-BY-4.0 |
Corresponding record in: Inspire
Journalen skapades 2021-09-20, och modifierades senast 2021-09-20
