Characterisation of a real-time fibre-coupled beryllium oxide (BeO) luminescence dosimeter in X-ray beams

Alexandre M Caraça Santos, Mohammad Mohammadi, Johan Asp, Tanya M. Monro, Shahraam Afshar V.

Research output: Contribution to journalArticle

18 Citations (Scopus)

Abstract

For the first time the feasibility of using beryllium oxide (BeO) ceramics as a fibre-coupled radioluminescent dosimeter is investigated. BeO ceramic exhibits both radioluminescence (RL) and optically stimulated luminescence (OSL), and has the potential to be a near tissue equivalent alternative to Al2O3:C. A BeO fibre-coupled radioluminescence dosimeter is demonstrated and characterised for 6 MV X-rays and superficial X-ray energies, 150 kVp and 120 kVp. Based on the results, we demonstrate the capability of the RL BeO FOD for accurate and reproducible dose measurements with a linear dose rate and dose response. It has also been found that the percentage depth dose curves for 6 MV agreed with ion chamber measurements to within 2%, except in the build up region. For the 150 kVp and 120 kVp photon beams, the depth dose measurements agreed with ion chamber measurements to within 2.5% and 4%, respectively.

LanguageEnglish
Pages1-7
Number of pages7
JournalRadiation Measurements
Volume53-54
DOIs
Publication statusPublished - 1 Jun 2013

Keywords

  • BeO
  • Fibre optic dosimetry
  • Radioluminescence

ASJC Scopus subject areas

  • Radiation
  • Instrumentation

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