OSL and TL techniques combined in a beryllium oxide detector to evaluate simultaneously accumulated and single doses

Applied Radiation and Isotopes : Including Data, Instrumentation and Methods for Use in Agriculture, Industry and Medicine
Anna L M C MalthezVera L S N Button

Abstract

Optically stimulated luminescence (OSL) and thermoluminescence (TL) are similar techniques widely used in radiation dosimetry. The main difference between these techniques is the stimulus to induce luminescence emission: TL technique uses thermal stimulation, whereas OSL uses optical stimulation. One of the main intrinsic characteristics of the OSL technique is the possibility of reading several times the dosimetric materials with a negligible loss of signal. In the case of BeO, recent studies have shown that TL stimulation up to 250°C does not affect its OSL signal. Taking the advantages of dosimetric characteristics of BeO combined with both techniques, in this study, we demonstrated the possibility of measuring accumulated and single doses in the same BeO-based detector in order to use it to improve individual monitoring of radiation workers exposed to X-ray or gamma-ray fields. Single doses were measured using TL technique by heating the detector up to 250°C, whereas accumulated doses were estimated using OSL technique in the same detector in a relatively short time of optical stimulation. The detectors were exposed to two energies: 28keV X-rays and 1.25MeV Co-60 gamma rays. The doses estimated by OSL and TL of BeO (Thermal...Continue Reading

References

Jun 1, 1970·Health Physics·C R Rhyner, W G Miller
Jan 1, 1969·Health Physics·E TochilinW G Miller
Jun 1, 2006·Radiation Protection Dosimetry·M Sommer, J Henniger

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Citations

Apr 24, 2018·Radiation Protection Dosimetry·A L M C MalthezM B Freitas
Jan 12, 2021·Radiation Protection Dosimetry·Tomas KronEduardo G Yukihara

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