Phys.Rev. C 102, 044310 (2020)

L.Knafla, G.Hafner, J.Jolie, J.-M.Regis, V.Karayonchev, A.Blazhev, A.Esmaylzadeh, C.Fransen, A.Goldkuhle, S.Herb, C.Muller-Gatermann, N.Warr, K.O.Zell

Lifetime measurements of ¹⁶²Er: Evolution of collectivity in the rare-earth region

NUCLEAR REACTIONS ¹⁵⁴Sm(¹²C, 4n)¹⁶²Er, E=62 MeV; measured Eγ, Iγ, γγ-coin, half-life of 7(-) isomer by γ(t), level half-lives by γγ(t) fast-timing technique using the HORUS spectrometer with eight HPGe detectors and eight LaBr3(Ce) scintillation detectors at the 10 MV FN-Tandem accelerator of the University of Cologne. ¹⁶²Er; deduced levels, J, π, B(E2). Comparison with confined β soft model and the interacting boson model calculations. Systematics of B(E2) values transition quadrupole moments and β₂ deformation parameters for ^{158,160,162,164,166,168,170}Er.

doi: 10.1103/PhysRevC.102.044310