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|Title:||Standoff alpha radiation detection for hot cell imaging and crime scene investigation|
|Authors:||KERST THOMAS; SAND JOHAN; IHANTOLA SAKARI; PERÄJÄRVI K.; NICHOLL ADRIAN; HRNECEK ERICH; TOIVONEN H.; TOIVONEN JUHA|
|Citation:||OPTICAL REVIEW vol. 25 no. 3 p. 429–436|
|Publisher:||OPTICAL SOC JAPAN|
|Type:||Articles in periodicals and books|
|Abstract:||This paper presents the remote detection of alpha contamination in a nuclear facility. Alpha-active material in a shielded nuclear radiation containment chamber has been localized by optical means. Furthermore, sources of radiation danger have been identified in a staged crime scene setting. For this purpose, an electron-multiplying charge-coupled device camera was used to capture photons generated by alpha-induced air scintillation (radioluminescence). The detected radioluminescence was superimposed with a regular photograph to reveal the origin of the light and thereby the alpha radioactive material. The experimental results show that standoff detection of alpha contamination is a viable tool in radiation threat detection. Furthermore, the radioluminescence spectrum in the air is spectrally analyzed. Possibilities of camera-based alpha threat detection under various background lighting conditions are discussed.|
|JRC Directorate:||Nuclear Safety and Security|
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