The detectors were positioned with the anode wire parallel to the projectile beam direction at 01. Due to the geometrical arrangement of the detectors with respect to the projectile beam direction and because of the size of openings of the detectors, neutrons with energies other than the 01 neutron energy can also enter the detector volume (Fig. 3). In each of the irradiations the deviations from the 01 neutron energy and mean energies of these neutrons were calculated by weighting the neutron energies with their intensities at relevant directions. Angular dependences of laboratory cross-sections and energies were calculated using the DROSG-2000 code. The calculated difference between mean neutron energies and the energies
of neutrons at 01 varied from 0.1% to 0.3%.