Measurement of 14.54 ± 0.24 MeV neutron activation reaction cross sections of 93Nb, natMo with covariance analysis

Abstract

The 93 Nb(n,α) 90m Y, 93 Nb(n,2n) 92m Nb and 92 Mo(n,p) 92m Nb reaction cross sections have been measured relative to the 197 Au(n,2n) 196 Au monitor reaction at the neutron energy of 14.54 ± 0.24 MeV. The neutrons were generated from the T(d,n) 4 He reaction using Purnima neutron generator. The experiment was done by using the method of activation in combination with an off-line -ray spectrometry technique. The uncertainties and correlations for the reaction cross sections were estimated with the use of covariance analysis by considering the partial uncertainties in individual attributes. The measured reaction cross sections have been analyzed by comparing with the data available in EXFOR compilation, various files of evaluated data and theoretically calculated values from TALYS-1.9. Keywords 93 Nb(n,α) 90m Y, 93 Nb(n,2n) 92m Nb and 92 Mo(n,p) 92m Nb reactions • T(d,n) 4 He reaction neutron • Activation • Off line -ray spectrometry • Covariance analysis • TALYS-1.9

14.77 MeV neutron-induced nuclear reaction cross sections for zinc, yttrium, and molybdenum targets*

“…The experimental data of Refs. [133,150,154,155] after normalization with the IRDFF-II evaluation of the 93 Nb(n, 2n) 92 Nb m monitor changed by less than 2%. The experimental data of Refs.…”