3.14 Secondary gamma-ray skyshine from 14MeV neutron source facility(OKTAVIAN) -Comparison of Measurement with its Simulation

摘要

Measurement of secondary gamma-ray skyshine was performed at the Intense 14MeV Neutron Source Facility (OKTAVIAN) of Osaka University with Nal and Hp_Ge detectors. From the result of measurements, some mechanism of secondary gamma-ary skyshine from 14MeV neutron source facility was found out. The analysis of the measured result were carried out with MCNP-4B for four nuclear data files of JENDL-3.2, JENDL-F.F., FENDL-2, and ENDF/B-VI. It was confirmed that all the nuclear data are fairly reliable for calculations of secondary gamma-ray skyshine.