The neutron leakage spectra from beryllium and aluminium spheres for 14 MeV neutron source within the energy interval 6-15 MeV

The leakage neutron spectra with the 14 MeV neutron source from the 5 cm thick beryllium and 7.5 cm aluminium spherical shells were measured by the time-of-flight technique in the energy interval 6-15 MeV. The experimental results are in good agreement with other experimental data that have been obtained by the time-of-flight and total absorption methods. The experimental results have been compared with the calculations by the BLANK code based on the ENDF/B-IV, ENDL-78, ENDL-83 and JENDL-2 library data. (orig.)