New model for assessing dose, dose rate, and temperature sensitivity of radiation-induced absorption in glasses

Olivier Gilard (1) , Matthieu Caussanel (2) , Hervé Duval (2) , Gianandrea Quadri (1) , François Reynaud (3)

1 CNES - Centre National d'Études Spatiales [Toulouse]
2 PROMES - Procédés, Matériaux et Energie Solaire
3 PHOTONIQUE

A new theoretical approach is proposed to explain dose, dose rate and temperature sensitivity of Radiation-Induced Absorption (RIA) in glasses. In this paper a βth-order dispersive kinetic model is used to simulate the growth of the color center density in irradiated glasses. This model yields an explanation of power-law dependency on dose and dose rate usually observed for optical fiber RIA. It also leads to an Arrhenius-like relationship between RIA and glass temperature during irradiation. With a very limited number of adjustable parameters, it succeeds in explaining, with a good agreement, RIA growth of two different optical fibes references over wide ranges of dose, dose rate and temperature.

Domains: Physics [physics]

Olivier Gilard, Matthieu Caussanel, Hervé Duval, Gianandrea Quadri, François Reynaud. New model for assessing dose, dose rate, and temperature sensitivity of radiation-induced absorption in glasses. Journal of Applied Physics, 2010, 108 (9), pp.093115. ⟨10.1063/1.3503370⟩. ⟨hal-01288493⟩