The on-line prompt gamma neutron activation analysis (PGNAA) system is used to measure a series of prepared experimental samples to obtain the prompt characteristic γ -rays of the elements Ca, Fe, Si, Al, Mg and S in the examples of SiO 2 , Al 2 O 3 , MgO, CaO (powder), CaO (block), CaCO 3 , Fe 2 O 3 , Fe 3 O 4 and S. The γ -ray energies are:
A fusion-fission hybrid conceptual reactor is established. It consists of a DT neutron source and a spherical shell of depleted uranium and hydrogen lithium. The tritium production rate (TPR) distribution in the conceptual reactor was measured by DT neutrons using two sets of lithium glass detectors with different thicknesses in the hole in the vertical direction with respect to the D+ beam of the Cockcroft-Walton neutron generator in direct current mode. The measured TPR distribution is compared with the calculated results obtained by the three-dimensional Monte Carlo code MCNP5 and the ENDF/B-VI data file. The discrepancy between the measured and calculated values can be attributed to the neutron data library of the hydrogen lithium lack S(α, β) thermal scattering model, so we show that a special database of low-energy and thermal neutrons should be established in the physics design of fusion-fission hybrid reactors.
A benchmark of pure vanadium shell with a wall thickness of 10.5 cm has been established. Leakage neutron spectrum, leakage gamma spectrum, reaction rates and neutron multiplication at the assembly center with D-T neutron were measured. Monte-carlo calculation was made using the MCNP/4A Code with the FENDL-2 nuclear data. The experimental results were compared with the calculations.
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