Physical Review Letters

Polarized-proton elastic scattering from polarized C13

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The p13C(polarized target) elastic-scattering spin observables A000n (target analyzing power) and A00nn (spin-correlation parameter) were determined at 497.5 MeV over the laboratory angular range 12°30°with statistical uncertainties typically 0.020.06. Results of distorted-wave Born approximation calculations, based on either the relativistic or the nonrelativistic impulse approximation, are in reasonable agreement with these new data. © 1990 The American Physical Society.