Novel environmental monitoring detector for discriminating fallout and airborne radioactivity.

Autor: Holm P; Radiation and Nuclear Safety Authority, 01370, Vantaa, Finland., Ihantola S; Radiation and Nuclear Safety Authority, 01370, Vantaa, Finland.; NeutronGate Oy, 11710, Riihimäki, Finland., Bogdanoff V; Radiation and Nuclear Safety Authority, 01370, Vantaa, Finland.; Department of Physics, University of Jyvaskyla, P.O. Box 35, 40014, Jyvaskyla, Finland., Peräjärvi K; Radiation and Nuclear Safety Authority, 01370, Vantaa, Finland. kari.perajarvi@stuk.fi., Dendooven P; Helsinki Institute of Physics, University of Helsinki, P.O. Box 64, 00014, Helsinki, Finland., Tengblad O; Instituto de Estructura de la Materia, CSIC, Serrano 113-Bis, 28006, Madrid, Spain., Muikku M; Radiation and Nuclear Safety Authority, 01370, Vantaa, Finland.
Jazyk: angličtina
Zdroj: Scientific reports [Sci Rep] 2023 Dec 18; Vol. 13 (1), pp. 22550. Date of Electronic Publication: 2023 Dec 18.
DOI: 10.1038/s41598-023-48730-0
Abstrakt: Early warning networks are used for detecting abnormal radioactivity levels in the environment. State-of-the-art networks are equipped with both dose rate detectors and spectrometric stations. Current networks don't automatically discriminate between radioactivity on the ground and in the air. A novel directional sensing gamma radiation detector utilizing a collimated phoswich scintillator was developed. The signals from the two scintillator materials are separated using a pulse shape discrimination. The separated signals are employed to determine the radioactivity concentrations on the ground and in the air assuming specific concentration distributions. Limitations related to imperfect directional sensing and dead time are discussed.
(© 2023. The Author(s).)
Databáze: MEDLINE
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