Measurement and calculation of fast-neutron spectra in water, graphite and lithium fluoride assemblies with a D-T neutron source

The scalar neutron spectrum normalized in reference to unit source neutron was measured with a miniature NE213 spectrometer at several positions along the centerline in a graphite-reflected lithium fluoride pile irradiated with D-T neutrons. The measured spectra were compared with the results of calculation using the MORSE-GG Monte Carlo code with the modified point-detector estimator and the GICXFNS group cross section set. The calculated spectrum near source neutron peak was less than the measured spectrum, and the discrepancy became larger with increasing penetration distance in the lithium fluoride region. The calculated spectrum was less than the measured spectrum below 4MeV, especially in the graphite region.

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Measurement and calculation of fast-neutron spectra in water, graphite and lithium fluoride assemblies with a D-T neutron source

Cited by 5 publications

References 8 publications

Measurement of fast neutrons and secondary gamma rays in graphite

Measurement of fast neutrons and secondary gamma rays in graphite

Radiation attenuation in light materials with spherical geometry

Scalar Fast Neutron Spectra in Graphite-Reflected Lithium Fluoride Pile with D-T Neutron Source

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