GIRARD , Sylvain

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...

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...

International audience

We give a novel and very general treatment to a standard model describing dose rate effects in systems damaged by carrier trapping. This model is well adapted for optical fibers, but the lessons we draw may also be helpful to discuss dose rate effects (DRE) in electronic devices. By highlighting the few determinant ratios of physical parameters...

One of the main criteria for choosing a thermoluminescent dosimeter (TLD) is its sensitivity to the radiations under investigation. Increasing the heating rate during readout often appears necessary to reduce the time between the measurements and the dose evaluation, especially in routine dosimetry. However, doing this degrades the radiation...

L'un des principaux critères de sélection d ' un dosimètre thermoluminescent (TLD) est sans aucun doute la sensibilité de sa réponse aux différents rayonnements. L'augmentation de la vitesse de chauffe lors de la lecture du dosimètre préalablement irradié apparaît souvent nécessaire particulièrement en dosimétrie de routine puisqu'elle permet...

One of the main criteria for choosing a thermoluminescent dosimeter (TLD) is its sensitivity to the radiations under investigation. Increasing the heating rate during readout appears often necessary to reduce the time between the measurements and the dose evaluation, especially in routine dosimetry. However, doing this degrades the radiation...

We give a global approach clarifying the conditions of enhanced low and high dose rate sensitivity to help in reconciling contradictory results on dose rate dependences. An experimental example on silica optical fibers is presented.

We have investigated the thermoluminescent response of three Germanium-doped silica-based optical fibers obtained by varying the drawing parameters from a unique preform. We compared under X-ray irradiation, their dosimetric properties to those of two widely used commercial dosimeters based on different technologies. Then, we investigated the...

We have investigated the thermoluminescent response of three Germanium-doped silica-based optical fibers obtained by varying the drawing parameters from a unique preform. We compared under X-ray irradiation, their dosimetric properties to those of two widely used commercial dosimeters based on different technologies. Then, we investigated the...

The TSL response of Germanium doped optical fiber shows a good neutronand proton- detection efficiency and high gamma ray sensitivity. This opens the way to a universal dosimeter, particularly interesting at therapy levels.

Online X‐ray radiation induced attenuation (RIA) has been performed in aluminosilicate optical fibers having different Al concentrations. The studied UV‐visible spectral range revealed the presence of absorption bands related to Al defects. Their generation is shown to be not noticeably dependent on the dose rate. Furthermore, the Al content...

International audience

International audience

International audience

International audience

International audience

International audience