Single-particle strengths measured with ⁴⁸Ca(d, p)⁴⁹Ca reaction at 56 MeV

Single-particle states in ⁴⁹Ca have been investigated through the ⁴⁸Ca(d, p)⁴⁹Ca reaction initiated by vector-polarized deuterons of E_d = 56 MeV. Thirty-six levels were observed up to 8 MeV excitations. Transferred l, j values were deduced for these levels by measured angular distributions of cross section and analyzing power. We observed many additional states and corrected some previous j^π assignments. The total values of spectroscopic factors C²S obtained with zero-range distorted-wave-Born-approximation (DWBA) calculations are almost unity for the shells 2p _{3 2}, 2p _{1 2} and 1f _{5 2}, and no 1f _{7 2} states are observed. It is confirmed that ⁴⁸Ca has a good closed-shell structure, the feature of which is consistent with occupation probabilities predicted from an extended second RPA theory.