| Authors |
Yordanov, Deyan T ; Rodríguez, Liss V ; Balabanski, Dimiter L ; Bieroń, Jacek ; Bissell, Mark L ; Blaum, Klaus ; Cheal, Bradley ; Ekman, Jörgen ; Gaigalas, Gediminas ; Garcia Ruiz, Ronald F ; Georgiev, Georgi ; Gins, Wouter ; Godefroid, Michel R ; Gorges, Christian ; Harman, Zoltán ; Heylen, Hanne ; Jönsson, Per ; Kanellakopoulos, Anastasios ; Kaufmann, Simon ; Keitel, Christoph H ; Lagaki, Varvara ; Lechner, Simon ; Maaß, Bernhard ; Malbrunot-Ettenauer, Stephan ; Nazarewicz, Witold ; Neugart, Rainer ; Neyens, Gerda ; Nörtershäuser, Wilfried ; Oreshkina, Natalia S ; Papoulia, Asimina ; Pyykkö, Pekka ; Reinhard, Paul-Gerhard ; Sailer, Stefan ; Sánchez, Rodolfo ; Schiffmann, Sacha ; Schmidt, Stefan ; Wehner, Laura ; Wraith, Calvin ; Xie, Liang ; Xu, Zhengyu ; Yang, Xiaofei |
| Abstract [eng] |
Tin is the chemical element with the largest number of stable isotopes. Its complete proton shell, comparable with the closed electron shells in the chemically inert noble gases, is not a mere precursor to extended stability; since the protons carry the nuclear charge, their spatial arrangement also drives the nuclear electromagnetism. We report high-precision measurements of the electromagnetic moments and isomeric differences in charge radii between the lowest 1/2+, 3/2+, and 11/2− states in 117–131Sn, obtained by collinear laser spectroscopy. Supported by state-of-the-art atomic-structure calculations, the data accurately show a considerable attenuation of the quadrupole moments in the closed-shell tin isotopes relative to those of cadmium, with two protons less. Linear and quadratic mass-dependent trends are observed. While microscopic density functional theory explains the global behaviour of the measured quantities, interpretation of the local patterns demands higher-fidelity modelling. |
