Assessment of Ge-doped optical fibres as a TSL-mode detector

Mourad Benabdesselam (1) , Franck Mady (1) , Sylvain Girard (2)

1 LPMC - Laboratoire de physique de la matière condensée
2 DAM/DIF - DAM Île-de-France

This study analyses the thermally stimulated luminescence or thermoluminescence (TL) glow curve between 300 and 773 K of germanium-doped silica optical fibre. A main glow peak at 530 K with a characteristic spectral emission centred at 400 nm is found. Both features are particularly suitable for dosimetry. Thus, an investigation by the TL technique of some first clinically relevant features of a TL sensor like the dose- and dose rate-responses is examined. The presented studies show that germanium doped silica fibres have potential dosimetric properties and should be excellent TL-mode detectors in instances of radiotherapy (clinical dosimetry) and in-vivo radiation dosimetry as well in the field of nuclear facilities.

Mots clés: dosimetry; radiation; silica; optical fibres

Domaines: Optique / photonique

Mourad Benabdesselam, Franck Mady, Sylvain Girard. Assessment of Ge-doped optical fibres as a TSL-mode detector. 9th Symposium "SiO2: Advanced Dielectrics and Related Devices", Jun 2012, Hyères, France. pp.51. ⟨hal-00848217⟩