Remote detection of alpha radiation source by optical method
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Abstract:
In order to solve the problem that the traditional alpha radiation source detection technique is unable to achieve re-mote detection and is not suitable for detecting alpha radiation source with complex morphology, remote detection of alpha radiation source by measuring the fluorescence generated by the interaction between alpha particles and nitro-gen molecules is investigated in this paper. In dark condition, nitrogen fluorescence is collected by the optical system with an aperture of 50 mm and detected by a photomultiplier tube working in the photon counting mode. The alpha radiation source with total activity of 7.3 kBq and unit area activity of 49 Bq/cm2 can be detected within 30 s at a distance of 0.6 m. The detection limit of the alpha radiation source detection system proposed in this paper ranks among the top in the related research fields.
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No. BEP21C003
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