TOTAL CROSS-SECTIONS, ELASTIC-SCATTERING OBSERVABLES AND DIRECT RECONSTRUCTION OF SCATTERING MATRIX IN NP INTERACTIONS BETWEEN 0.8-GEV AND 1.1-GEV AT SATURNE-II

Neutron-proton total cross section differences with the beam and targe t polarizations orientated either transversally or longitudinally with respect to the beam direction, as well as 11 spin dependent elastic s cattering observables measured at SATURNE II as a function of energy a nd angle are presented. A major part of results was measured using the quasimonoenergetic polarized neutron beam and/or the polarized proton target. A small part of data was obtained using a polarized deuteron beam considered as a beam of quasifree neutrons and protons. The prese nt paper represents a review of measured observables. Several sets of present data are compared with results obtained in other laboratories below 0.8 GeV. Imaginary parts of spin dependent forward amplitudes fo r np scattering and for the isospin state I = 0 were determined. First direct reconstruction of the np scattering matrix at 0.84 GeV is show n.