Yuan Hanrong

Institute of Atomic Energy
P.O. Box 275 (41), Beijing, China

The experimental data for 56Fe(n,p)56Mn cross section in the neutron energy region up to 20 MeV have been collected and evaluated. The selected data were treated by using the least square method. The trend of the excitation curve was used to adjust the experimental data in the 14 MeV region to 14.7 MeV and the evaluated cross section of 108.7±1.0 mb for 14.7 MeV neutrons was used to normalize the evaluated values of the excitation curve. The evaluated values of the excitation curve are higher than those of ENDF/B-V by about 4-10% in the 7-10 MeV energy region and by about 2-5% in the 11-19 MeV energy region.

KEYWORDS: cross section, evaluation, 56Fe(n,p)56Mn reaction, En = 4.0-20.0 MeV