Measurement and Analysis of the Leakage Neutron Spectrum from Gallium Cylinder Samples

摘要

The gallium integral experimental study on the neutronics is an important issue for design of nuclear engineering.Gallium has the characteristics of low melting point and high boiling point.It is a kind of target material and an important fission product,which can be also used as a cooling agent.These application designs require precise and reliable nuclear data.Based on the neutronics integral experimental setup at China Institute of Atomic Energy(CIAE),the leakage neutron spectra were measured from natural Gallium cylinder samples(Φ10 mm5 cm andΦ10 mm10 cm)by time-of-flight(TOF)technique with a BC501A(Φ5.08 cm5.08 cm)scintillation detector.For the benchmark analysis of the recent neutron evaluated nuclear data of Gallium,the leakage neutron spectra were simulated by MCNP-4C code with the ENDF/B-VII.1,JEFF-3.2 and TENDL-2015 evaluated nuclear data libraries and compared with experimental data and TALYS calculated results.