Spectroscopy of 146Sm via the (d, t) and of 148Sm via the (d, t) and (d, p) reactions

The (d, t) reaction on the isotopes 147Sm and 149Sm has been investigated at a deuteron energy of 17 MeV; the (d, p) reaction on the isotope 147Sm at a deuteron energy of 12.5 MeV. Angular distributions were taken in 2.5degree steps in the range of 7.5less than or equal totheta)less than or equal to35degree and in 5degree steps for theta) > 35degree. The experimental energy resolution is 9--11 keV for the pickup reactions and 10--12 keV for the stripping case. Spectroscopic factors and l transfers were extracted by distorted wave Born approximation analysis. Eighty-three states in 146Sm are observed; l transfer and J/sup pi/ limits are given for 36 of them. For the nucleus 148Sm 97 states are observed; l transfers and J/sup pi/ limits are given for 63 of them. Reasonable l=3, l=1, and l=0 summed strengths have been found. Comparison with (p,t) and (t,p) studies of the same final nuclei investigated here is made in a phenomenological collective picture