Nuclear Energy Levels ofGd156as Populated byβEmission fromEu156

Abstract

Energy levels of ${\mathrm{Gd}}^{156}$ populated by the beta decay of ${\mathrm{Eu}}^{156}$ have been studied. Energies of 36 transitions were determined absolutely using the Davis solenoidal spectrometer. Twenty-nine transitions were integrated into a decay scheme. In several cases external-conversion technique was used to assign multipolarities. Level energies (in keV), spins, and parities determined are: 88.95, 2+; 288.14, 4+; 1153.9, 2+; 1168.0, 0, 1, 2+; 1242.2, 1-; 1319.3, 2-; 1366.1, 1-; 1965.5, 1, 2+; 2026.2, 1, 2+; 2180.5, 1+; 2186.3, 1+; 2202.5, 0, 1, 2+, and 2203.2.