Phys.Lett. B 873, 140144 (2026)

J.Z.Zhang, Z.Q.Chen, T.Qu, Y.K.Wang, Z.H.Li, H.Hua, P.W.Zhao, H.Watanabe, G.Lorusso, C.X.Yuan, S.Nishimura, H.Baba, G.Benzoni, F.Browne, K.Y.Chae, F.C.L.Crespi, P.Doornenbal, N.Fukuda, R.Gernhauser, G.Gey, C.Y.Guo, N.Inabe, T.Isobe, D.X.Jiang, Y.Jin, H.S.Jung, A.Jungclaus, D.Kameda, G.D.Kim, Y.K.Kim, I.Kojouharov, F.G.Kondev, T.Kubo, N.Kurz, G.J.Lane, X.Q.Li, J.L.Lou, D.W.Luo, A.Montaner-Piza, K.Moschner, F.Naqvi, L.Ni, M.Niikura, H.Nishibata, A.Odahara, R.Orlandi, Z.Patel, Z.Podolyak, H.Sakurai, H.Schaffner, G.S.Simpson, P.-A.Soderstrom, K.Steiger, T.Sumikama, H.Suzuki, H.Takeda, J.Taprogge, A.Wendt, H.Y.Wu, J.Wu, C.Xu, Z.Y.Xu, A.Yagi, Y.L.Ye, K.Yoshinaga, S.Q.Zhang, S.Y.Zhang, Z.X.Zhou

Shape evolution in neutron-rich Rh isotopes: First measurement of negative-parity isomers in ^{117, 119}Rh

RADIOACTIVITY ^117,119Ru(β^-), ^117,119Rh(IT) [from ⁹Be(²³⁸U, X)¹¹⁷Ru/¹¹⁹Ru, E=345 MeV/nucleon]; measured decay products, Eγ, Iγ; deduced γ-ray energies J, π, tentatie level scheme, T_1/2, the crucial role of triaxial deformation, particularly in the positive-parity states, in driving the observed evolution of energy differences. Com parison with self-consistent triaxial relativistic Hartree-Bogoliubov (TRHB) calculations. The Radioactive Isotope Beam Factory (RIBF) facility at RIKEN in the framework of the Euroball RIken Cluster Array (EURICA) project.

doi: 10.1016/j.physletb.2025.140144