Autors: Pressyanov, D. S., Dimitrov, D. P., Georgiev, P. A.
Title: A sensitive DVD-based radon and thoron detector for environmental monitoring
Keywords: Environmental concentrations; High sensitivity; Radon; Thoro

Abstract: A sensitive discriminative radon and thoron detector is described. The detector consists of a spindle-box and 2 DVDs. One DVD (DVD-1) is fixed on the base, inside the spindle, with the sensitive surface overlooking air volume. Another DVD (DVD-2) is mounted at the outer side of the base of the spindle, with the sensitive surface looking to the exterior. After exposure, the disks are etched electrochemically: DVD-1 on the surface while DVD-2 at depth of 64 µm. At such arrangement, DVD-1 is mostly sensitive to radon whereas DVD-2 - to thoron. The detector was calibrated by exposures to reference radon and thoron concentrations. Numerical estimates showed that for 3 months of exposure the limits of detection achievable are < 0.3 Bq m−3 for radon and < 2 Bq m−3 for thoron. The high sensitivity and simple design make such detector useful for monitoring of environmental radon and thoron levels.



    ELSEVIER, vol. 203, issue 15, pp. 1-9, 2022, Netherlands, Measurement: Journal of the International Measurement Confederation, DOI 10.1016/j.measurement.2022.112026

    Вид: статия в списание, публикация в реферирано издание, индексирана в Scopus