Measurement of high threshold activation cross sections for 13.5 to 15.0 mev neutrons

Measurements on cross sections of 58 Ni(n,2n), 59 Co(n,2n), 90 Zr(n,2n), 93 Nb(n,2n) and 197 Au(n,2n) have been performed for the energy range from 13.5 to 15.0 MeV by using the intense d-T neutron source, FNS. The cross sections were newly revised on the basis of the measured data. Integral tests of the new cross section data were performed in the spectrum unfolding of D-T neutron fields and in the analysis of the reaction-rate distribution in a graphite assembly.