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Nuclear density is the density of the nucleus of an atom, averaging about 2.3×10¹⁷ kg/m³. The descriptive term nuclear density is also applied to situations where similarly high densities occur, such as within neutron stars. The nuclear density of an typical nucleus can be approximately calculated from the size of the nucleus, which itself can be approximated based on the number of protons and neutrons in it.
Neutron flux measurement method and device, neutron flux calibration method and system
The application discloses a neutron flux measurement method and device and a neutron flux calibration method and system, and relates to the technical field.The measurement method is applied to a neutron flux measurement system, and the neutron flux measurement system comprises a fuel rod sleeve of a micro reactor core critical device; M grooves are arranged on the fuel rod sleeve, and the grooves are used for accommodating detection activation sheets; M is a positive integer; the method comprises the following steps: acquiring a first correction factor, a first nuclear density, a first detection efficiency and M first information corresponding to the M grooves; and determining M absolute neutron fluxes corresponding to the M grooves according to the first correction factor, the first nuclear density, the first detection efficiency and the M first information.According to the embodiment of the application, the method not only meets the structural requirements of a compact reactor core, but also avoids the disturbance of carriers and supports to the neutron field in the reactor core, and the number of times of starting the reactor can be reduced.
Owner:CHINA NUCLEAR POWER ENGINEERING CO LTD