Level Structure ofCa45Investigated by Deuteron Stripping

The level structure of ${\mathrm{Ca}}^{45}$ below 6.3-MeV excitation has been studied by the ${\mathrm{Ca}}^{44}\mathrm{}(d,p)\mathrm{}{\mathrm{Ca}}^{45}$ reaction. Twenty-eight of the observed 88 transitions showed stripping angular distributions and were analyzed in terms of the distorted-wave Born approximation to obtain $l_n$ values and spectroscopic factors. A sum-rule analysis of the spectroscopic factors is given. A level at 1.886 MeV was excited by an $l_n=2\mathrm{}$ transition and is interpreted as a $1{d_{\frac{3}{2}}}^{-1\mathrm{}}$ hole state in ${\mathrm{Ca}}^{45}$. This state is further discussed in terms of core excitation in ${\mathrm{Ca}}^{44}$. The observed ${\mathrm{Ca}}^{45}$ level scheme is compared to calculated level schemes and to the level schemes of the ${\mathrm{Sc}}^{46}$ and ${\mathrm{Ti}}^{47}$ isotones.