aLeningrad Nuclear Physics Institute, Gatchina, Leningrad district, 188350, USSR
bService de Physique Nucléaire, Moyenne Energie, CEN Saclay, 91191 Gif-sur-Yvette Cedex, France
Abstract:
An experimental setup for measurements of absolute differential cross sections and analyzing powers in small angle elastic np scattering is described. The main part of the apparatus consists of a multielectrode ionization chamber IKAR filled with methane, serving as both a gas target and a recoil detector. The apparatus was used in measurements with a polarized neutron beam from the Saturne synchrotron (Saclay, France) in the energy range from 378 to 1135 MeV.