Proton-deuteron elastic scattering has been investigated at Ep = 22.7 MeV by comparison of rigorous Faddeev calculations with experimental results. The observable most sensitive to the tensor force is the nucleon-nucleon polarization transfer coefficient Kill'. The new angular distribution of K~I' clearly favours the tensor force of the Bonn A potential, which is weaker than the one of the Paris potential.

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The polarization transfer coefficients Kxx', Kyy' and Kzx' in the reaction 2H(p,p)2H have been measured at an incident proton energy of 22.5 MeV. The results are compared to predictions from Faddeev calculations using various nucleon-nucleon potential models. The overall agreement is rather good. The comparison in more detail shows a pronounced sensitivity of the results, especially for Kyy', to the 3S1-3D1 and 1P1 NN force components. As in nucleon-nucleon scattering, however, these two parameters are correlated, thus hampering definite conclusions.

Proton transfer to unbound states was studied within the framework of the standard distortedwave Born approximation formalism by using the form factors of their bound isobaric analog states. The results of the present analyses have shown that the spectroscopic factors obtained by substituting the form factors of the parent analog states for the unbound states in the distorted-wave Born approximation calculations are frequently not reliable.