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Attenuation of fast neutrons in ilmenite concretes

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Abstract
Energy distributions of fast neutrons (> 0.5 MeV) transmitted through slabs of normal and high density ilmenite concretes, obtained by time of flight methods, are presented for concrete thicknesses increasing in steps of 7.6 cm from 0 to 46 cm. The incident spectrum consisted of a photoneutron continuum from aluminium irradiated with 35 MeV bremsstrahlung, and was thus of somewhat higher mean neutron energy than a typical fission spectrum. The measured distributions are in satisfactory agreement with the results of a Monte Carlo simulation, and results from the latter are used to extrapolate the measured data to greater thicknesses and other ilmenite concrete densities.
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  • Health physics 36, no. June 6 (1979): 671–678.
LanguageEnglish
NRC numberNRCC 17314
3607
NPARC number8899852
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Record identifierab384075-3545-4312-bf1d-a28c8ddbd7c4
Record created2009-04-22
Record modified2020-03-13
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