Collective effects in even-mass samarium isotopes by polarized-proton scattering

Abstract

The even-mass samarium isotopes 148-~'s2Sm have been investigated by polarizedproton scattering at 20.4 MeV beam energy. The data have been analysed with an 'extended' optical model, where the intensities of the first maxima of the main inelastic chamnels are fitted in a coupied-channels calculation. The availability of analysing-power dala fumed out to be very helpful in the analysis. The well known phase transition from vibiator 10 m o r shows up clearly with increasing neutron number.NUCLEAR REACTIONS 14~'50~152~154Sm (polarized p,p), E = 20.4 MeV: measured U(@, A W ) ; deduced optical-model parameters, deformation suenglhs. multipole moments.