Configuration mixing in ${}_{}{}^{56}{}_{}{}^{}\mathrm{Co}$ and ${}_{}{}^{46}{}_{}{}^{}\mathrm{Sc}$ using (d→,α) reactions

Two-nucleon spectroscopic amplitudes are investigated using cross-section measurements and tensor analyzing powers for the ${}_{}{}^{58}{}_{}{}^{}\mathrm{Ni}$(d→,α${)}^{56}$Co and ${}_{}{}^{48}{}_{}{}^{}\mathrm{Ti}$(d→,α${)}^{46}$Sc reactions. Angular distributions of cross sections, and analyzing powers ${\mathit{A}}_{\mathit{y}}$, ${\mathit{A}}_{\mathit{x}\mathit{x}}$, and ${\mathit{A}}_{\mathit{y}\mathit{y}}$, were measured in steps of 5° from 10° to 65° at a bombarding energy of 22 MeV. Data were analyzed using full finite-range DWBA calculations including a realistic α-particle wave function. The L-mixing ratios for several strong unnatural-parity transitions have been determined from comparison of calculations with analyzing power data. These ratios are compared to predictions of shell-model calculations to deduce predominant two-nucleon configurations.