Eur.Phys.J. A 52, 172 (2016)

H.Mach, A.Lindroth, E.Ruchowska, J.Kvasil, B.Fogelberg, K.Gulda, A.J.Aas, M.J.G.Borge, I.S.Grant, E.Hagebo, W.Kurcewicz, T.Martinez, B.Rubio, J.F.Smith, K.Steffensen, J.L.Tain, O.Tengblad, T.F.Thorsteinsen

On the enhanced E1 transitions in the K = 3/2 parity doublet band in ²²³Ra

RADIOACTIVITY ²²³Fr(β^-)[from ²²³Rn]; measured β-decay of (3/2)^- and (5/2)^- states (50 and 80 keV) Eγ, Iγ(t) using BaF2 crystal for timing and two Ge, Eβ, Iβ(t) using ΔE NE111A, βγ-coin; deduced time-delayed βγ(t) spectrum, T_1/2, B(E1), B(E2), B(M1) for K=3/2 band states below 250 keV, intrinsic electric dipole moment D₀; calculated T_1/2, γ transition probabilities, B(E1), B(E2), B(M1), average electric dipole moment for ^223,224Ra (and compared with available data for Ra isotopes), quadrupole and octupole vibration energies in ^222,224Ra, structure of intrinsic states.

doi: 10.1140/epja/i2016-16172-4