Uncertainty of Neutron Spectra for Semiconductor Sandwich Spectrometer

The uncertainties of neutron spectra were defined to be the uncertainties of the neutron fluences or fluence rates for certain energy ranges in this paper. The neutron fluence rate spectra by ⁶Li semiconductor sandwich spectrometer were analyzed and the uncertainties of three typical energy ranges were presented. For total neutron fluence rate of 3.00×10⁷cm^-2•s^-1, the neutron fluence rates are 5.70^+2.38_-0.33×10⁵cm^-2•s^-1(k=1), (4.32±0.87)×10⁵cm^-2•s^-1(k=1) and 0.094^+0.028_-0.022×10⁵cm^-2•s^-1(k=1) for energy ranges of 0.20 keV, 0.59-0.61 MeV and 4.99-5.01 MeV, respectively.