Systematics of (p→, d) analyzing powers at 94 MeV

Analyzing-power angular distributions of the ($\overrightarrow{p}, d$) reaction on ${}_{}{}^{60}{}_{}{}^{}\mathrm{Ni}$, ${}_{}{}^{86}{}_{}{}^{}\mathrm{Sr}$, and ${}_{}{}^{208}{}_{}{}^{}\mathrm{Pb}$ have been measured at 94-MeV bombarding energy. A distinctive $j$ dependence was observed for the pickup of neutrons from the $p_{\frac{1}{2}}$, $p_{\frac{3}{2}}$, $f_{\frac{5}{2}}$, and $f_{\frac{7}{2}}$, orbitals which is independent of target mass and of the number of nodes in the neutron bound-state radial wave function. These characteristic $j=l\pm \frac{1}{2}$ signatures may thus be used as experimental templates for reliable spin determinations over the whole periodic table at this bombarding energy. Conventional distorted-wave Born approximation calculations using standard optical model parameters describe the experimental analyzing power angular distributions and the associated $j$ dependence rather poorly.