Spin correlation measurements for p${\mathrm{-}}^3$He elastic scattering between 4.0 and 10.0 MeV

Measurements of the polarization observables for ${}_{}{}^3{}_{}{}^{}\mathrm{He}$(p,p${)}^3$He elastic scattering have been obtained using a polarized proton beam in conjunction with polarized and unpolarized ${}_{}{}^3{}_{}{}^{}\mathrm{He}$ targets. An unpolarized target was used to make high precision measurements of the proton analyzing power ${\mathit{A}}_{\mathit{y}0}$ at the energies of 4.01, 5.54, 7.03, 8.52, and 10.1 MeV. A total of 135 data points were obtained with accuracies of typically ±0.005 or better. A newly developed polarized ${}_{}{}^3{}_{}{}^{}\mathrm{He}$ target was then used to make measurements of the ${}_{}{}^3{}_{}{}^{}\mathrm{He}$ analyzing power ${\mathit{A}}_{0\mathit{y}}$, and the spin correlation coefficient ${\mathit{A}}_{\mathit{y}\mathit{y}}$ at the same five energies. A total of 48 data points were obtained for each observable. Finally, measuremments of the spin correlation coefficients ${\mathit{A}}_{\mathit{x}\mathit{x}}$, ${\mathit{A}}_{\mathit{x}\mathit{z}}$, ${\mathrm{A}}_{\mathrm{zx}}$, and ${\mathit{A}}_{\mathit{z}\mathit{z}}$ were made at the single energy of 5.54 MeV. The accuracy of the spin-correlation and ${}_{}{}^3{}_{}{}^{}\mathrm{He}$ analyzing power measurements is typically on the order ±0.01–0.03.