We present new measurements of the analyzing power for np scattering at 10.03 MeV accurate to ±{} 1 ×{} 10^-3. A new source of systematic error, related to resonances in n-¹²C scattering in the neutron detectors, is discussed. The interaction of the neutron magnetic moment with the Coulomb field of the proton is found to make a significant contribution to the analyzing power at the present level of accuracy. The results are compared to predictions of nucleon-nucleon potential models. New, improved values are reported for the p and d-wave spin-orbit phase-shift splittings.
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Holslin et al. (1988) studied this question.
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