Standoff alpha radiation detection for hot cell imaging and crime scene investigation
Kerst, Thomas; Sand, Johan; Ihantola, Sakari; Peräjärvi, Kari; Nicholl, Adrian; Hrnecek, Erich; Toivonen, Harri; Toivonen, Juha (2018)
Kerst, Thomas
Sand, Johan
Ihantola, Sakari
Peräjärvi, Kari
Nicholl, Adrian
Hrnecek, Erich
Toivonen, Harri
Toivonen, Juha
2018
Julkaisun pysyvä osoite on
https://urn.fi/URN:NBN:fi:tty-201908232004
https://urn.fi/URN:NBN:fi:tty-201908232004
Kuvaus
Peer reviewed
Tiivistelmä
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.
Kokoelmat
- TUNICRIS-julkaisut [16908]