Retrospective radon progeny measurements through measurements of 210Po activities on glass objects using stacked LR 115 detectors

C. W Y Yip, D. Nikezic, K. N. Yu

    Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

    3 Citations (Scopus)

    Abstract

    A stacked LR 115 detector consisting of two active layers was proposed for determining 210Po activity in glass surfaces after deposition of short-lived radon progeny. The sensitivities of both active layers were calculated. Two glass samples were exposed in a chamber to determine the experimental calibration factors for the radon gas and progeny, which were then compared with the theoretical calibration factors from simulations. The experimental and the simulated calibration factors for radon progeny agreed well. The discrepancy between the calibration factors for radon gas was due to a much higher equilibrium factor used in the experimental calibration than the nominal value assumed in the simulation. A mini-survey of contemporary and retrospective radon progeny concentrations was carried out at 10 residential sites. A relationship between contemporary and retrospective radon progeny concentrations was not readily observable. © 2008 Elsevier B.V. All rights reserved.
    Original languageEnglish
    Pages (from-to)5050-5055
    JournalNuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms
    Volume266
    Issue number23
    DOIs
    Publication statusPublished - Dec 2008

    Research Keywords

    • 210Po
    • Implantation
    • LR 115
    • Radon
    • Radon progeny
    • Retrospective dosimetry

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