Simulation study of neutrons time-correlated coincidence count for uranium components based on 252Cf source-driven noise analysis method[J]. Nuclear techniques, 2013, 36(6): 060202
DOI:
Simulation study of neutrons time-correlated coincidence count for uranium components based on 252Cf source-driven noise analysis method[J]. Nuclear techniques, 2013, 36(6): 060202 DOI: 10.11889/j.0253-3219.2013.hjs.36.060202.
Simulation study of neutrons time-correlated coincidence count for uranium components based on 252Cf source-driven noise analysis method
Background: For the intensity of high-enriched uranium’s neutrons from fission is weak
the active detection method is commonly adopted.Purpose: The quality attribute of uranium components is analysed.Methods:According to the theory of neutron source-driven noise analysis method and mass measurement problem of uranium material or uranium component
Monte Carlo simulation is used to study the mass measurement of metal uranium sphere components with the same geometry and enrichment and the different masses.The time-correlation coincidence count distributions to different uranium components are obtained.Results: The source-driven time correlation coincidence measurements can provide quantities
time-dependent coincidence distributions between two detectors
which can be related to the mass of uranium components.Conclusions: By studying on the sample(radius: 4.67 cm
mass: 8 kg)
it realized mass measurement to metal uranium sphere components with different masses.