Low-cost weak radionuclide detecting method

Abstract

The invention discloses a low-cost weak radionuclide detecting method. Compared with an existing method, according to the method, firstly, a plastic scintillation spectrometer and a lanthanum bromide spectrometer form a double-coincidence detecting array structure, detecting efficiency, energy resolution, application cost and other factors are comprehensively considered, a lanthanum bromide detector is adopted as a main detector, a plastic detector is adopted as a coincidence detector, and an anticoincidence and coincidence measurement method is adopted for reducing the environmental background and increasing the system peak-to-compton ratio; secondly, front-end fast electronic circuit development and a subsequent digital processing algorithm are carried out on an electronic circuit of nuclear signal processing, pulse forming, base line restoration, overlapped pulse separation and the like are included, noise interference is reduced, and the energy resolution is increased; finally, a plastic scintillator is directly adopted as a shielding material of the main detector lanthanum bromide, therefore, the system weight can be reduced, and detecting efficiency can be improved.

Description

technical field [0001] Aiming at the urgent need to improve the signal-to-noise ratio, energy resolution, measurement accuracy, and measurement reliability in the field of on-line radioactivity measurement in seawater, the invention proposes the realization of a low-background weak radionuclide detection method. Background technique [0002] The New Silk Road plans to establish and improve the interconnection of infrastructure, promote the internationalization of cooperation and exchanges, take the marine economy as a breakthrough, jointly establish a marine breeding cooperation base, explore two-way investment in industrial parks, and improve the normalized cooperation and exchange mechanism; build mutual maritime interconnection Network, develop cooperation in the fields of ports, maritime logistics, and port-side industries, and actively develop maritime partnerships. This requires on-site real-time monitoring of radioactivity in seawater to ensure the cleanliness and saf...

AI Technical Summary

Problems solved by technology

However, if there is a problem with the operation and management of the nuclear reactor, the effluent containing radioactive substances may flow into the ocean

In addition, for example, the accident of the Kursk nuclear submarine may also lead to the leakage of radioactive materials, thereby polluting the nearby sea areas

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