Pasternak, A.A.A.A.PasternakLieder, Evgenia O.Evgenia O.LiederLieder, R.M.R.M.LiederChmel, SebastianSebastianChmelGast, W.W.GastVenkova, T.T.VenkovaAngelis, G. deG. deAngelisNapoli, D.R.D.R.NapoliGadea, A.A.GadeaBazzacco, D.D.BazzaccoMenegazzo, R.R.MenegazzoLunardi, S.S.LunardiDuchene, G.G.Duchene2022-03-042022-03-042008https://publica.fraunhofer.de/handle/publica/21684810.1140/epja/i2008-10631-5Lifetimes have been measured for a dipole band in 139Sm using DSAM. The deduced B(M1) and B(E2) values as well as B(M1)/B(E2) ratios are compared with calculations in the framework of the TAC (Tilted Axis Cranking) and SPAC (Shears mechanism with Principal Axis Cranking) models. The dipole band in 139Sm can be considered as a magnetic rotational band with a prolate or triaxial nuclear deformation.enalpha particlebranching ratioDE-excitationE2-transitionenergy spectraexperimental datagamma cascadegamma spectraheavy ion fusion reactionhigh spin statelifetimeM1-transitionMeV range 100-1000neutronprotonrotational stateruthenium 99 targetsamarium 139strength functiontitanium 48 reaction620539journal article