ADDENDUM: Neutron Time Interval Distributions with Background Neutrons

Figures & data

Fig. 1. The discrepancy in Eq. (76) (Ref. 1) becomes obvious with high detection efficiency, $ϵ=50\mathrm{\%}$ in this example. Correlated backgrounds were simulated in this example as an external ${ }^{252}$Cf source ${10}^{-11}$ g in size with a 40-$\mu$s diffusion time (characteristic of ${ }^3$He-based neutron multiplicity counters) and a background neutron detection efficiency of 30%

Fig. 2. Data for the same configuration as in Fig. 1 compared to Eq. (6)$\begin{array}{rl}& I_0^{\mathrm{T}\mathrm{o}\mathrm{t}\mathrm{a}\mathrm{l}}(T)=\frac{R_1}{R_1^{\mathrm{T}\mathrm{o}\mathrm{t}\mathrm{a}\mathrm{l}}}\left(I_0{b}_0^{\mathrm{B}\mathrm{k}\mathrm{g}}+R_1^{\mathrm{B}\mathrm{k}\mathrm{g}}{\mathrm{n}}_0{\mathrm{n}}_0^{\mathrm{B}\mathrm{k}\mathrm{g}}\right)\\ & +\frac{R_1^{\mathrm{B}\mathrm{k}\mathrm{g}}}{R_1^{\mathrm{T}\mathrm{o}\mathrm{t}\mathrm{a}\mathrm{l}}}\left(I_0^{\mathrm{B}\mathrm{k}\mathrm{g}}{b}_0+R_1{\mathrm{n}}_0^{\mathrm{B}\mathrm{k}\mathrm{g}}{\mathrm{n}}_0\right),(6)\end{array}$

M. PRASAD, N. SNYDERMAN, and S. WALSTON, “Neutron Time Interval Distributions with Background Neutrons,” Nucl. Sci. Eng., 186, 277 (2017); https://doi.org/10.1080/00295639.2016.1273620.

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