Integral test of secondary gamma-ray production cross sections of iron in JENDL-3 with continuous energy Monte Carlo analysis

Integral test of secondary gamma-ray production cross sections of iron in JENDL-3 was carried out with the continuous energy Monte Carlo analysis for the K and K iron secondary gamma-ray benchmark experiment. In the present analysis the 0.847 MeV peak was investigated in detail. At the peak, the large discrepancy was observed between the results with JENDL-3 and ENDF/B-IV data. The peak could not reproduced and an incomprehensive peak was appeared around 0.7 MeV with JENDL-3 data. Taking advantage of the Monte Carlo results, the iron secondary gamma-ray production cross sections were revised and the new data was proposed to JENDL-3.2. Consequently, the Sn calculations with the revised iron cross sections reproduced the 0.847 MeV peak quite well as with ENDF/B-IV data. However, the peak around 8 MeV was disappeared completely with the revised data. (author)