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Rossa, L.A.R. da* ; Regulla, D.F. ; Fill, U.A.

Reproducibility study of TLD-100 micro-cubes at radiotherapy dose level.

Appl. Radiat. Isot. 50, 573-577 (1999)
DOI
Open Access Green möglich sobald Postprint bei der ZB eingereicht worden ist.
The precision of the thermoluminescent response of Harshaw micro-cube dosimeters (TLD-100), evaluated in both Harshaw thermoluminescent readers 5500 and 3500, for 1 Gy dose value, was investigated. The mean reproducibility for micro-cubes, pre-readout annealed at 100°C for 15 min, evaluated with the manual planchet reader 3500, is 0.61% (1 standard deviation). When micro-cubes are evaluated with the automated hot-gas reader 5500, reproducibility values are undoubtedly worse, mean reproducibility for numerically stabilised dosimeters being equal to 3.27% (1 standard deviation). These results indicate that the reader model 5500, or, at least, the instrument used for the present measurements, is not adequate for micro-cube evaluation, if precise and accurate dosimetry is required. The difference in precision is apparently due to geometry inconsistencies in the orientation of the imperfect micro-cube faces during readout, requiring careful and manual reproducible arrangement of the selected micro-cube faces in contact with the manual reader planchet.
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Publikationstyp Artikel: Journalartikel
Dokumenttyp Wissenschaftlicher Artikel
ISSN (print) / ISBN 0969-8043
e-ISSN 1872-9800
Zeitschrift Applied Radiation and Isotopes
Quellenangaben Band: 50, Heft: 3, Seiten: 573-577 Artikelnummer: , Supplement: ,
Verlag Elsevier
Begutachtungsstatus Peer reviewed
Institut(e) Institute of Radiation Protection (ISS)