Phys.Rev. C 97, 044306 (2018)

L.Liu, S.Y.Wang, S.Wang, H.Hua, S.Q.Zhang, J.Meng, R.A.Bark, S.M.Wyngaardt, B.Qi, D.P.Sun, C.Liu, Z.Q.Li, H.Jia, X.Q.Li, C.Xu, Z.H.Li, J.J.Sun, L.H.Zhu, P.Jones, E.A.Lawrie, J.J.Lawrie, M.Wiedeking, T.D.Bucher, T.Dinoko, L.Makhathini, S.N.T.Majola, S.P.Noncolela, O.Shirinda, J.Gal, G.Kalinka, J.Molnar, B.M.Nyako, J.Timar, K.Juhasz, M.Arogunjo

Evolution from quasivibrational to quasirotational structure in ¹⁵⁵Tm and yrast 27/2^- to 25/2^- energy anomaly in the A ≈ 150 mass region

NUCLEAR REACTIONS ¹⁴⁴Sm(¹⁶O, 4np), E=118 MeV; measured Eγ, Iγ, γγ-coin, γγ(θ)(ADO) using the AFRODITE array for γ detection at iThemba LABS-SSC. ¹⁵⁵Tm; deduced high-spin levels, J, π, Eγ/spin ratio (E-GOS curves), side band, configuration, quasivibrational to quasirotational structure for the ground-state band; calculated potential energy surface (PES) in (ϵ₂, γ) plane. Systematics of E-GOS curves for ^{153,155,157,159}Tm, ¹⁵³Ho, ¹⁵⁷Lu, ¹⁵⁹Ta. Systematics of ground and side bands in ^{155,157,159,161}Tm, and energy differences between 25/2- and 27/2- yrast states in ^151,153Ho, ^153,155Tm, and ^155,157Lu.

doi: 10.1103/PhysRevC.97.044306