Phys.Lett. B 862, 139359 (2025)

M.Stryjczyk, A.Jaries, W.Ryssens, M.Bender, A.Kankainen, T.Eronen, Z.Ge, I.D.Moore, M.Mougeot, A.Raggio, J.Ruotsalainen

Discovery of a new long-lived isomer in ¹¹⁴Rh via Penning-trap mass spectrometry

RADIOACTIVITY ¹¹⁴Ru(β^-), ¹¹⁴Rh(IT) [from U(p, X), E=25 MeV]; measured decay products frequencies; deduced masses of three long-lived states, J, π, T_1/2. Comparison with BSkG3, a recent model based on mean-field calculations with an energy density functional (EDF) of the Skyrme type. The Phase-Imaging Ion-Cyclotron-Resonance (PI-ICR) technique, the Penning-trap measurements, the Ion Guide Isotope Separator On-Line (IGISOL) facility in Jyvaskyla, Finland.

doi: 10.1016/j.physletb.2025.139359