Temporal modelling of beryllium oxide ceramics’ real-time OSL for dosimetry with a superficial 140 kVp X-ray beam

Authors

Levi Madden, University of WollongongFollow
Alexandre Santos
Enbang Li, University of WollongongFollow
Raghu Gowda
Eva Bezak
Shahraam Afshar
Anatoly B. Rosenfeld, University of WollongongFollow

RIS ID

146098

Publication Details

Madden, L., Santos, A., Li, E., Gowda, R., Bezak, E., Afshar, S. & Rozenfeld, A. (2020). Temporal modelling of beryllium oxide ceramics’ real-time OSL for dosimetry with a superficial 140 kVp X-ray beam. Physica Medica, 80 17-22.

Abstract

© 2020 A new analysis method for the rtOSL of BeO ceramics is presented, using temporal curve fitting of an expected rtOSL signal to measured rtOSL signals. The presented technique does not require heavy signal averaging to determine the OSL bleaching correction associated with the ΔrtOSL method, reducing uncertainties in the post-correction rtOSL. The corrected rtOSL signal was demonstrated to be linear with dose, and dose-rate independent. The presented technique is expected to be applicable for many other dosimeters capable of the rtOSL technique. The presented technique achieved relative uncertainties in the corrected rtOSL between 3.4% and 6.5%. The initial measurements are promising, but uncertainties are required to be further improved upon before the technique can be used clinically.