Model for the dose, dose-rate and temperature dependence of radiation-induced loss in optical fibers Griscom, D L; Gingerich, M E; Friebele, E J [Optical Society of America, Washington, DC (United States)] 36 MATERIALS SCIENCE; 44 INSTRUMENTATION, INCLUDING NUCLEAR AND PARTICLE DETECTORS; OPTICAL FIBERS; PHYSICAL RADIATION EFFECTS; ARRHENIUS EQUATION; COBALT 60; DEFECTS; DOSE RATES; ENERGY LOSSES; GAMMA RADIATION; GERMANIUM ADDITIONS; OXYGEN; POST-IRRADIATION EXAMINATION; RADIATION ATTENUATION TESTING; SILICON OXIDES; TEMPERATURE DEPENDENCE We propose, and verify in the case of a Ge-doped-silica-core optical fiber, a general explanation for the power-law dependencies on dose frequently observed for the radiation-induced attenuation in optical fibers. This insight permits detailed prediction of the post-irradiation recovery curves, given just the empirical exponent of the power law, 0 < f < 1, and the experimental irradiation time, t{sub irrad}. The time constant of the recovery is given by t{sub irrad}/(1-f), in both first, and second-order kinetics. We establish a microscopic model of radiolytic oxygen molecules for the {gamma}-ray-induced absorption at 1.3 {mu}m in our test fibers and infer a diffusion limited bimolecular recombination process. (author). 19 refs., 6 figs. Commissariat a l`Energie Atomique, Bruyeres-le-Chatel (France) CEA Centre d`Etudes de Bruyeres-le-Chatel, 91 (France) France 1994-12-31 English Conference Conference: Symposium on radiations and their effects on components and systems, Saint-Malo (France), 13 Sep 1993; Other Information: PBD: 1994; Related Information: Is Part Of Radiation and its effects on components and systems; PB: 596 p. Medium: X; Size: pp. 257-261 https://doi.org/ [] CONF-9309349- TRN: FR9502530007707 FRN; SCA: 360605; 440200; PA: AIX-27:007707; EDB-96:037741; SN: 96001535263 2008-02-04 181229