Measurement of np elastic scattering spin-spin correlation parameters at 484, 634, and 788 MeV

The spin-spin correlation parameters C/sub LL/ and C/sub SL/ were measured for np elastic scattering at the incident neutron kinetic energy of 634 MeV. Good agreement was obtained with previously measured data. Additionally, the first measurement of the correlation parameter C/sub SS/ was made at the three energies, 484, 634, and 788 MeV. It was found that the new values, in general, do not agree well with phase shift predictions. A study was carried out to determine which of the isospin-0 partial waves will be affected by this new data. It was found that the 1P1 partial wave will be affected significantly at all three measurement energies. At 634 and 788 MeV, the 3S1 phase shifts will also change. 29 refs., 21 figs., 16 tabs