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Improvement of dose determination using glass display of mobile phones for accident dosimetry.

Radiat. Meas. 56, 240-243 (2013)
DOI
Open Access Green as soon as Postprint is submitted to ZB.
Previous studies have demonstrated that mobile phones can be used as suitable emergency dosimeters in case of an accidental radiation overexposure. Glass samples extracted from displays of mobile phones are sensitive to ionizing radiation and can be measured using the thermoluminescence (TL) method. A non-radiation induced background signal (so-called zero dose signal) was observed which overlaps with the radiation induced signal and consequently limits the minimum detectable dose. Investigations of several glasses from different displays showed that it is possible to reduce the zero dose signal up to 90% by etching the glass surface with concentrated hydrofluoric acid. With this approach a reduction of the detection limit of a factor of four, corresponding to approximately 80 mGy, was achieved. Dosimetric properties of etched samples are presented and developed protocols validated by dose recovery tests under realistic conditions. With the improvements in sample preparation the proposed method of dose determination is a competitive alternative to OSL/TL measurements of electronic components and chip cards and provides a useful option for retrospective accident dosimetry.
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Publication type Article: Journal article
Document type Scientific Article
Keywords Accident dosimetry; Emergency dosimeter; Glass display; Mobile phone; Retrospective dosimetry; Thermoluminescence (TL); Retrospective Dosimetry ; Electronic Components ; Luminescence
ISSN (print) / ISBN 1350-4487
e-ISSN 1879-0925
Quellenangaben Volume: 56, Issue: , Pages: 240-243 Article Number: , Supplement: ,
Publisher Elsevier
Reviewing status Peer reviewed