Odd-odd neutron-rich rhodium isotopes studied with the double Penning trap JYFLTRAP

M. Hukkanen (1) , W. Ryssens , P. Ascher (1) , M. Bender (2) , T. Eronen , S. Grévy (1) , A. Kankainen , M. Stryjczyk , L. Al Ayoubi , S. Ayet , O. Beliuskina , C. Delafosse , W. Gins , M. Gerbaux (1) , A. Husson (1) , A. Jokinen , D.A. Nesterenko , I. Pohjalainen , M. Reponen , S. Rinta-Antila , A. de Roubin , A.P. Weaver

1 LP2I - Bordeaux - Laboratoire de Physique des Deux Infinis Bordeaux
2 IP2I Lyon - Institut de Physique des 2 Infinis de Lyon

Precision mass measurements of neutron-rich rhodium isotopes have been performed at the JYFLTRAP Penning trap mass spectrometer at the Ion Guide Isotope Separator On-Line (IGISOL) facility. We report results on ground- and isomeric-state masses in $^{110,112,114,116,118}$Rh and the very first mass measurement of $^{120}$Rh. The isomeric states were separated and measured for the first time using the phase-imaging ion-cyclotron-resonance (PI-ICR) technique. For $^{112}$Rh, we also report new half-lives for both the ground state and the isomer. The results are compared to theoretical predictions using the BSkG1 mass model and discussed in terms of triaxial deformation.

Domaines: Physique Nucléaire Expérimentale [nucl-ex]; Physique Nucléaire Théorique [nucl-th]

M. Hukkanen, W. Ryssens, P. Ascher, M. Bender, T. Eronen, et al.. Odd-odd neutron-rich rhodium isotopes studied with the double Penning trap JYFLTRAP. Phys.Rev.C, 2023, 107 (1), pp.014306. ⟨10.1103/PhysRevC.107.014306⟩. ⟨hal-03837702⟩