Ce/Gd-codoped sol-gel silica glasses: towards temperature-independent radiation dosimeters

International audienc

Simulation of Radioluminescence Processes in Cerium-doped silica glasses

International audienceRare-earth-doped silica glasses are promising materials for ionizing radiation dosimetry. Indeed, under such radiations, these materials present an interesting real-time radioluminescence (RL) signal. In this paper, we study RL of Ce-doped silica glasses using a kinetic model involving one or several trapping states and one recombination center. Using appropriate sets of trapping parameters for the kinetic model, the RL signal along with the occupancies of the relevant traps and center are simulated numerically. Several experimentally observed characteristics of the RL signals are explained using the model

Thermoluminescence and Radioluminescence Processes in Sol-Gel Gd3+-doped silica glasses

OralInternational audienc

Effects of Measurement Temperature on Radioluminescence Processes in Cerium-Activated Silica Glasses for Dosimetry Applications

International audienceCerium-doped-silica glasses are widely used as ionizing radiation sensing materials. However, their response needs to be characterized as a function of measurement temperature for application in various environments, such as in vivo dosimetry, space and particle accelerators. In this paper, the temperature effect on the radioluminescence (RL) response of Cerium-doped glassy rods was investigated in the 193–353 K range under different X-ray dose rates. The doped silica rods were prepared using the sol-gel technique and spliced into an optical fiber to guide the RL signal to a detector. Then, the experimental RL levels and kinetics measurements during and after irradiation were compared with their simulation counterparts. This simulation is based on a standard system of coupled non-linear differential equations to describe the processes of electron-hole pairs generation, trapping-detrapping and recombination in order to shed light on the temperature effect on the RL signal dynamics and intensity

Simulation of Radioluminescence Processes in Cerium-doped silicaglasses

International audienc

Simulation of Radioluminescence Processes in Cerium-doped silicaglasses

International audienc