Discrimination of LINAC photon and sunlight contributions in watch glass analyzed by means of thermoluminescence

Maurizio Marrale, Anna Longo, Antonio Carlino, Maria Brai, Maurizio Marrale, Antonio Carlino, Anna Longo, Maria Brai

Risultato della ricerca: Articlepeer review

7 Citazioni (Scopus)

Abstract

AbstractThe research described in this paper shows how to extract from the glow curves of watch glasses exposed to LINAC photons and sunlight a contribution sensitive to LINAC photons dose. As first step, the dependence of the TL signal due to sunlight on the exposure duration was studied and a signal saturation was observed after about 20 weeks. The comparison of TL signals due to solar light and to LINAC photons highlights a partial overlap of the two signals. Here, two different analysis procedures of glow curves (general order kinetics deconvolution and principal components analysis) are reported to point out components which depend differently on LINAC photon radiation dose. For both analyses two components were used and the dependence on dose was investigated. In order to evaluate the ability of both techniques to reconstruct absorbed doses a blind test was performed. The reconstructed dose with both techniques is significantly consistent with the initial dose value. The procedures here described are valuable because they could be used to discriminate any background signal from that due to ionizing radiation irradiation and could be used as useful tools for dose reconstruction in retrospective dosimetry. © 2012 Elsevier B.V. All rights reserved.
Lingua originaleEnglish
pagine (da-a)89-96
Numero di pagine8
RivistaNUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH. SECTION B, BEAM INTERACTIONS WITH MATERIALS AND ATOMS
Volume281
Stato di pubblicazionePublished - 2012

All Science Journal Classification (ASJC) codes

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  • ???subjectarea.asjc.3100.3105???

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