Abstract

A Monte Carlo calculation has been made of the correction for neutrons lost to (n,α) and (n,p) reactions with sulfur and oxygen in the manganous sulfate bath calibration of neutron sources. The correction factor is given as a function of initial neutron energy for monoenergetic neutrons in an infinite bath and as a function of manganous sulfate concentration. The correction factors for various published source spectra are also given. The uncertainty in the correction for a given source spectrum due to uncertainties in the source spectrum is much larger than those due to the Monte Carlo calculation or the cross sections.

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