Abstract
At the PTB TOF spectrometer, cross sections were measured for the elastic and inelastic scattering of neutrons on nat Pb at an incident neutron energy of En = 2.94MeV. The 15 N(p,n) 15 O reaction was used for the production of monoenergetic neutrons. Measurements were carried out at 10 angles from 25u to 130u. Angle-integrated cross sections were obtained by fitting a Legendre polynomial expansion to the experimental data. Cross sections could be determined for the elastic scattering on nat Pb as well as for inelastic scattering with excitation of the 1 st level of 206 Pb and the 1 st and 2 nd level of 207 Pb. The cross sections were normalized to the ENDF/B-V hydrogen scattering cross section. The preliminary results are compared with existing experimental and evaluated data, i.e. cross section data of the ENDF/B-VI.8 and JENDL 3.3 evaluations. Additional measurements in the energy range from 2MeV to 4MeV are in progress.
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