Inconsistencies in Angular Momentum Assignments to Nuclear Energy Levels inCa+41

The reaction ${}_{}{}^{40}{}_{}{}^{}\mathrm{Ca}\mathrm{}(d,p)\mathrm{}{}_{}{}^{41}{}_{}{}^{}\mathrm{Ca}$ has been studied with vector-polarized deuterons of an energy of 11 MeV. The measured vector analyzing power was used to make angular momentum assignments to states in ${}_{}{}^{41}{}_{}{}^{}\mathrm{Ca}$ at $E_x=3.62,4.62, \mathrm{and} 4.77$ MeV. Two of the present $j$ assignments are in disagreement with results obtained by other methods. Further experiments are needed to investigate the reliability of different methods of determining angular momenta of nuclear energy levels.