Benchmark experiments have been carried out to validate the nuclear data files of JENDL-3.2, JENDL fusion file, ENDF/B-VI, FENDLIE-l.0 and FENDLIE-2.0 for blanket materials of LiAl0 2 , Liz TI0 3 and LizZr03 and structural materials, i.e., C, V, Fe, SS-316, Cu, Pb and W. Some discrepancies between measured and calculated spectra were observed. However, the CIE values for the energy multiplied integral spectrum show that all of the nuclear data files were fairly reliable.
Fusion neutronics benchmark experiments for copper and tungsten and advanced breeder materials of LiAI0 2 , LhTi0 3 and Li2Zr03 have been conducted at FNS of JAERI to validate five nuclear data files, i.e., JENDL-3.2, JENDL Fusion File, ENDF/B-VI, FENDUE-l.O and FENDUE-2.0. From the result, all the nuclear data files were confirmed to be fairly reliable with respect to the prediction of neutron spectrum. However, some problems were pointed out. Especially for Zr, the discrepancy between the experimental and calculated spectra is remarkably large.
The method has been established to measure (n,2n) reaction cross section with the coincidence detection technique using a newly developed pencil beam DT neutron source at FNS of JAERI. A cylindrical manganese, the (n,2n) cross section of which was measured precisely with the foil activation method, was used to check the experimental method. It was confirmed from the experimental results that the present new method was basically functioning to measure only two neutrons emitted through (n,2n) reaction. Considering the not so strong angular dependence for Mn, by adoption of the TOF measurement the cross sections especially for medium heavy elements can be accurately determined. Consequently, by the present method, it is expected that complete (n,2n) reaction cross section measurements for stable-isotope producing elements by (n,2n) reaction would become possible with the coincidence detection and TOF methods.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.