Few groups neutron spectra, and dosimetric features, of isotopic neutron sources

Using Monte Carlo methods, the neutron spectra in 31 energy groups of several isotopic neutron sources were estimated. For each source the neutron mean energy; the Ambient dose equivalent, the Personal dose equivalent and the Effective dose per unit fluence rate were calculated. A convenient way to produce neutrons is the isotopic neutron source, where the production is through (alpha, n), (gamma, n), and spontaneous fission reactions. Isotopic neutron sources are small, easy to handle, and have a relative low cost. On the other hand the neutron yield is small and mostly of them produces neutrons with a wide energy distribution. In this work, the main features of (NaBe)-Na-24, (NaD2O)-Na-24, In-116 (LaBe)-La-140, (PuLi)-Pu-239, (PuBe)-Pu-239, (AmB)-Am-241, (AmBe)-Am-241, (241)Amz (AmLi)-Am-241, (CmBe)-Cm-242, (PoBe)-Po-210, (RaBe)-Ra-226, Cf-252 and Cf-252/D2O isotopic neutron source are also compiled. (C) 2016 Elsevier Ltd. All rights reserved.