One-proton transfer reactions induced byO16andC12onNi64

The (${}_{}{}^{16}{}_{}{}^{}\mathrm{O}$, ${}_{}{}^{15}{}_{}{}^{}\mathrm{N}$) and (${}_{}{}^{12}{}_{}{}^{}\mathrm{C}$, ${}_{}{}^{11}{}_{}{}^{}\mathrm{B}$) reactions on ${}_{}{}^{64}{}_{}{}^{}\mathrm{Ni}$ target have been investigated using 56 MeV ${}_{}{}^{16}{}_{}{}^{}\mathrm{O}$ and 48 MeV ${}_{}{}^{12}{}_{}{}^{}\mathrm{C}$ beams. Angular distributions were obtained for the first five excited states of ${}_{}{}^{65}{}_{}{}^{}\mathrm{Cu}$. No-recoil distorted-wave Born-approximation (DWBA) analyses were made and striking anomalies were found especially for the (${}_{}{}^{16}{}_{}{}^{}\mathrm{O}$, ${}_{}{}^{15}{}_{}{}^{}\mathrm{N}$) reaction leading to the $j_{<}$ states. These anomalies were then shown to disappear if exact finite-range DWBA analyses were made, which gave reasonable absolute spectroscopic coefficients in close agreement with those obtained in light ion reactions.