Abstract
The detection of α particles is of great significance in military and civil nuclear facility management. At present, the contact method is mainly used to detect α particles, but its shortcomings limit the broad application of this method. In recent years, preliminary research on noncontact α-particle detection methods has been carried out. In this paper, the theory of noncontact α-particles detection methods is introduced and studied. We also review the direct detection and imaging methods of α particles based on the different wavelengths of fluorescence photons, and analyze the application and development of this method, providing an important reference for researchers to carry out related work.
Highlights
With the development of science and technology, nuclear energy and nuclear technology are playing an increasingly important role in the social and military fields in the new era
The emission spectra produced by N2 molecules include the N2 first positive systems (FPS), second positive systems (SPS), Herman’s IR
The results show that the ICCD camera performs better than the electron-multiplying CCD cameras (EMCCD) camera for detection in field conditions
Summary
With the development of science and technology, nuclear energy and nuclear technology are playing an increasingly important role in the social and military fields in the new era. The monitoring of α radiation is an essential element for civil and military nuclear facilities or nuclear equipment, including radioactive waste disposal, nuclear accident emergency response, nuclear facility decommissioning, nuclear explosion monitoring, military nuclear facility management, and nuclear security. The detection of α radiation is required in all scenarios. Due to the short range of α-particles and other characteristics and different monitoring scenarios, it is crucial to study noncontact α-particle detection technology. Compared to the contact measurement techniques mainly used today, noncontact measurement has outstanding advantages in specific application scenarios. Research into this technology is limited to laboratory studies or experimental validation, and no mature products have yet been seen
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