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由于45Sc(p,n)45Ti反应在keV能区处于一系列共振区,共振宽度小,因而只有使用薄靶并精细调节加速器端电压(入射质子的能量)才能产生单色性好的单能中子,同时需要测量该反应的中子产额激发曲线,以便确定产生所需能量中子的加速器端电压。利用20μg/cm2Sc靶测量激发曲线,激发曲线如图1所示。端电压控制精度在±300V以内,端
Because the 45Sc (p, n) 45Ti reaction is in a series of resonance regions in the keV region, the resonance width is small, and therefore the monochromatizability of monochromatization can only be achieved by using a thin target and finely adjusting the accelerator voltage (the energy of the incident proton) At the same time it is necessary to measure the neutron yield excitation curve of the reaction in order to determine the accelerator terminal voltage that produces the neutron of desired energy. Excitation curves were measured using a 20 μg / cm2 Sc target and the excitation curves are shown in FIG. 1. Terminal voltage control accuracy within ± 300V, the end