A. P. Weaver | TrappedIons.org

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

M. Hukkanen [1,2], W. Ryssens [3], P. Ascher [2], M. Bender, T. Eronen [1,2], S. GrÃ©vy, A. Kankainen [1], M. Stryjczyk [1], L. Al Ayoubi [1,5], S. Ayet [6], O. Beliuskina [1], C. Delafosse [1], W. Gins [1], M. Gerbaux [2], A. Husson [2], A. Jokinen [1], D. A. Nesterenko, I. Pohjalainen [1], M. Reponen [1], S. Rinta-Antila [1], A. de Roubin [1,7], A. P. Weaver

Abstract

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.