Optical image sensors and their application in radon detection

DOIResolve DOI: http://doi.org/10.1117/12.2033635
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EditorSearch for: Cheben, Pavel; Search for: Schmid, Jens; Search for: Boudoux, Caroline; Search for: Chen, Lawrence R.; Search for: Delâge, André; Search for: Janz, Siegfried; Search for: Kashyap, Raman; Search for: Lockwood, David J.; Search for: Loock, Hans-peter; Search for: Mi, Zetian
Proceedings titlePhotonics North 2013
Series titleProceedings of SPIE; no. 8915
ConferencePhotonics North 2013, Monday 3 June 2013, Ottawa, Canada
Article number89151C
AbstractThis paper reports on the development and testing of a direct reading radon detector assembled from consumer electronics at very low cost. An electrostatic concentrator constructed by metalizing a plastic funnel is used to focus charged radon progeny onto the exposed surface of an optical image sensor from a webcam. Alpha particles emitted by the collected progeny strike the image sensor, generating sufficient charge to completely saturate one or more pixels The high voltage required by the concentrator is generated using a simple Cockcroft-Walton charge pump. A personal computer is used to analyze the webcam data. Alpha particles were counted at a rate of 5.2 counts/ hour at a radon concentration of 159 Bq/ m3.
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AffiliationInformation and Communication Technologies; National Research Council Canada
Peer reviewedYes
NPARC number23001042
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Record identifier8efe5fec-86c7-4327-a908-c689b4c47b8a
Record created2016-12-02
Record modified2017-09-13
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