Energy measurement of D-T neutrons near the target using the ratio of the (n, 2n) and (n, p) reaction of nickel

Abstract For the first time, a sensitive method based on the cross-section ratio of 58g+m Co/ 57 Ni for the determination of axial and angular variation of energy of D-T neutrons near the tritium target has been presented. The results are compared with the “Zr/Nb” ratio method and with theoretically calculated values. The effect of scattered neutrons from the target backing and the surrounding material has also been investigated. The impact of the energy variation on the activation analysis or the cross-section measurement is discussed.