Determination of (n,2n) reaction cross-section for ${}^{154}$Sm, ${}^{150}$Nd and ${}^{82}$Se at 14.6 MeV neutron energy

The (n,2n) reaction cross-sections of ${}^{154}$Sm, ${}^{150}$Nd and ${}^{82}$Se isotopes at 14.6 MeV neutron energy have been measured by neutron activation followed by off-line gamma-ray spectrometry with improved experimental methodology. The neutron flux was determined using the ${}^{197}$Au(n, 2n)${}^{196}$Au${}^g$ monitor reaction which has not been used earlier for cross-section measurement for the above mentioned nuclei. The measured reaction cross-sections are found to have good agreement with calculated cross-section data, obtained independently, using Talys and ENDF codes. A detailed comparison of the present cross-section data with the existing literature has been presented in this paper.