Observation ofj-Dependent Effects in Quasifree Scattering of Polarized Protons

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Jacob, Maris, Schneider, and Teodoro have suggested that spin-orbit coupling in nuclei, combined with absorption in ($p,2p$) reactions, will select nuclear protons with a given polarization resulting in $j$-dependent ($\stackrel{\ensuremath{\rightarrow}}{\mathrm{p}},2p$) cross sections. Using a 200-MeV polarized proton beam at TRIUMF we have observed an asymmetry which has the expected $j$ dependence and agrees with the predictions of a distorted-wave impulse-approximation calculation.