Single-particle and core-excited states in 49Sc: (I). The 48Ca(3He,d)49Sc reaction

The ⁴⁸Ca(³He, d)⁴⁹Sc reaction has been studied at 25 MeV incident energy. Angular distributions have been measured from 5° to 40° using a split-pole spectrometer, for about 160 levels located up to 18 MeV excitation energy. A local zero-range DWBA analysis has been carried out, using Gamow functions as form factors in the case of unbound states; l-assignments and spectroscopic factors are obtained for a large number of levels, most of them previously unknown. The summed experimental spectroscopic strengths for the T_<, l = 1 and l = 3 levels are in good agreement with the shell-model sum-rule limits for 1f-2p proton states, and their energy centroids have been determined. The $\text{lg}{}_{\mathrm{<mtext>9</mtext><mtext>2</mtext>}}$ strength in ⁴⁹Sc is strongly fragmented: about 27% of the T_< strength is carried by twenty-three levels located between 6.5 and 13.5 MeV. Spectroscopic factors for analog states are compared with those from previous (p, p), (³He, dp) and (d, p) experiments.