Phys.Rev. C 95, 034313 (2017)

R.Yokoyama, S.Go, D.Kameda, T.Kubo, N.Inabe, N.Fukuda, H.Takeda, H.Suzuki, K.Yoshida, K.Kusaka, K.Tanaka, Y.Yanagisawa, M.Ohtake, H.Sato, Y.Shimizu, H.Baba, M.Kurokawa, D.Nishimura, T.Ohnishi, N.Iwasa, A.Chiba, T.Yamada, E.Ideguchi, T.Fujii, H.Nishibata, K.Ieki, D.Murai, S.Momota, Y.Sato, J.W.Hwang, S.Kim, O.B.Tarasov, D.J.Morrissey, B.M.Sherrill, G.Simpson, C.R.Praharaj

New K isomers in the neutron-rich N=100 isotones ¹⁶²Sm, ¹⁶³Eu, and ¹⁶⁴Gd

NUCLEAR REACTIONS ⁹Be(²³⁸U, F)¹⁶²Sm/¹⁶³Eu/¹⁶⁴Gd, E=345 MeV/nucleon; measured reaction products through measurements of magnetic rigidity, time of flight (TOF), and energy loss in BigRIPS spectrometer at RIBF-RIKEN facility, Eγ, Iγ, delayed γ spectra, half-lives of μs isomers by γ(t). ¹⁶²Sm, ¹⁶³Eu, ¹⁶⁴Gd; deduced levels, J, π, bands, reduced hindrance factors for E1 transitions from the isomers, configurations. Systematics of level energies in N=100 isotones of ¹⁶²Sm, ¹⁶⁴Gd, ¹⁶⁶Dy, ¹⁶⁸Er and ¹⁷⁰Yb. Comparisons with deformed Hartree-Fock calculations.

doi: 10.1103/PhysRevC.95.034313