Publications by authors named "Andrea Raggio"
The quantum-mechanical nuclear-shell structure determines the stability and limits of the existence of the heaviest nuclides with large proton numbers Z ≳ 100 (refs. ). Shell effects also affect the sizes and shapes of atomic nuclei, as shown by laser spectroscopy studies in lighter nuclides.
View Article and Find Full Text PDFHigh-resolution collinear laser spectroscopy has been performed on singly charged ions of U at the IGISOL facility of the Accelerator Laboratory, University of Jyväskylä, in Finland. Ten ionic transitions from the and ground and first excited states were measured in the 300 nm wavelength range, improving the precision of the hyperfine parameters of the lower states in addition to providing newly measured values for the upper levels. Isotope shifts of the analyzed transitions are also reported for U with respect to U.
View Article and Find Full Text PDFArticle Synopsis
- * The new mass data, with a precision around 1 keV/c², supports the robustness of the N=50 neutron shell closure and enables comparisons with advanced theoretical models for understanding nuclear properties.
- * The study also highlights the challenges faced by theoretical approaches, like ab initio calculations and density functional theory, in accurately predicting ground-state properties in the silver isotopic chain near the proton dripline.