2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/205097The JYFLTRAP mass spectrometer was used to measure the masses of neutron-rich nuclei in the region between N = 28 to N = 82 with uncertainties better than 10 keV. The impacts on nuclear structure and the r-process paths are reviewed.7 pages 3 pictures, Accepted for Publication Acta Phys Polonica, XXX Mazurian lake conf. procNuclear Experimenttext