Evaluation of Cross Sections for Neutron Monitor Reactions ~(90)Zr(n,x)~(89,88)Zr,~(88,87,86)Y from Threshold to 100 MeV

The cross sections for ~(90)Zr(n,x)~(89,88)Zr and ~(90)Zr(n,x)~(88,87,86)Y reactions in intermediate energy region are useful in neutron field monitor, safety and material damage research. Below 20 MeV, the evaluated cross sections for (90)Zr(n,2n)~(89)Zr reaction are recommended based on the recent experimental data, including the new measured results in CIAE(Above 20 MeV). The measured cross sections are still insufficient to do evaluation. So the evaluation for ~(90)Zr(n,x)~(89,88)Zr and (90)Zr(n,x)~(88,87,86)Y reactions from threshold to 100 MeV are based on experimental and calculated data.