Study on Measurement Technique Contrast of 14 MeVNeutron Fluence (In Chinese)

The stability and repetition of the associated-particle method to measure DT neutron fluence was tested.The neutron activation iron method was contrasted with the associated-particle method,the preparatory experiment was done.The neutron fluence measured with associated-particle method was contrasted with neutron activation Al method,the Al activated foil was measured with 4πβ(PC)-γ coincidence standard device.The contrast result's standard deviation of the two method was less than the expand uncertainty of the associated-particle method.Therein,the uncertainty of the associated-particle method is 1.6%,the uncertainty of the activation Al method is 1.8%.

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