Phys.Rev. C 109, 024309 (2024)

S.Lalkovski, F.G.Kondev, K.Auranen, A.D.Ayangeakaa, M.P.Carpenter, J.A.Clark, P.Copp, N.P.Giha, D.J.Hartley, T.Lauritsen, S.Marley, G.E.Morgan, C.Muller-Gatermann, S.Nandi, W.Reviol, D.Santiago-Gonzalez, G.Savard, D.Seweryniak, Ir.B.Vasilev, J.Wu

Structure of the high-spin, β-decaying state in the neutron-rich nucleus ¹⁴⁶La

RADIOACTIVITY ^146,146mLa(β^-)[from ²⁵²Cf(SF)]; measured Eγ, Iγ, Eβ, Iβ, γγγ-coin, βγγ-coin; deduced T_1/2 of 2 β-decaying states in ¹⁴⁶La, logft, β-decay feeding intensities, branchings. ¹⁴⁶La; deduced levels, J, π, isomer configuration for J^π=5^-. ¹⁴⁶Ce; deduced levels, γ-transitions. GAMMASPHERE spectrometer comprised of 62 Compton-suppressed HPGe coupled with HExagonal ARray for Triggering (HEART) comprised of 6 plastic scintillator detectors at Californium Rare Isotope Breeder Upgrade (CARIBU) facility (ANL). Complementary experiment with standalone GAMMASPHERE and ²⁵²Cf source.

doi: 10.1103/PhysRevC.109.024309