Polarization transfer inp−He3elastic scattering

Angular distributions of the polarization transfer coefficients $K_x^{x^{\prime }}$, $K_z^{x^{\prime }}$, and $K_y^{y^{\prime }}$ (Wolfenstein parameters $R$, $A$, and $D$ were measured at 16.2 MeV for ${}_{}{}^3{}_{}{}^{}\mathrm{He}(\overrightarrow{p},\overrightarrow{p})$ elastic scattering. The angular range covered was 30° to 90° (lab) in 10° steps. The experiment used a polarized proton beam of 150 to 200 nA, a liquid-nitrogen cooled ${}_{}{}^3{}_{}{}^{}\mathrm{He}$ gas target, and a ${}_{}{}^4{}_{}{}^{}\mathrm{He}$-filled proton polarimeter. The transfer coefficients are well described by an $R$-matrix analysis of the $p-{}_{}{}^3{}_{}{}^{}\mathrm{He}$ system.