Configuration mixing in 56Co and 46Sc using (d

Abstract

Two-nucleon spectroscopic amplitudes are investigated using cross-section measurements and tensor analyzing powers for the $^{58}\mathrm{Ni}$(d\ensuremath{\rightarrow},\ensuremath{\alpha}${)}^{56}$Co and $^{48}\mathrm{Ti}$(d\ensuremath{\rightarrow},\ensuremath{\alpha}${)}^{46}$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\ifmmode^\circ\else\textdegree\fi{} from 10\ifmmode^\circ\else\textdegree\fi{} to 65\ifmmode^\circ\else\textdegree\fi{} at a bombarding energy of 22 MeV. Data were analyzed using full finite-range DWBA calculations including a realistic \ensuremath{\alpha}-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.