The analyzing power, A(oono), and the polarization transfer observable
s K-oono, K-os '' so and K-os '' ko have been measured in neutron-prot
on elastic scattering at 260, 318, 386, 472 and 538 MeV for c.m. scatt
ering angles between 64 degrees and 160 degrees. The data were obtaine
d at PSI with a polarized neutron beam and a polarimeter analyzing the
transverse polarization of the outgoing proton. They make a significa
nt impact on the knowledge of the Isospin I = 0 nucleon-nucleon scatte
ring.