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Ce 3 + -doped fibers for remote radiation dosimetry

2004; American Institute of Physics; Volume: 85; Issue: 26 Linguagem: Inglês

10.1063/1.1840127

1520-8842

A. Vedda, N. Chiodini, Daniela Di Martino, Mauro Fasoli, S. Keffer, A. Lauria, M. Martini, Federico Moretti, G. Spinolo, M. Nikl, N. Solovieva, Gilberto Brambilla,

Glass properties and applications

A radioluminescent (RL) dosimetric system, based on a SiO2 optical fiber with the core doped by Ce3+ ions as luminescent activators has been investigated. Structural and optical properties of the luminescent fiber have been studied by Raman, refractive index, RL and scintillation time decay measurements, and compared to those obtained on bulk material. The RL response of a composite fiber made of a short portion of active Ce-doped fiber coupled to a long commercial one has been investigated by x-ray irradiation. A linear RL intensity response has been found in the dose rate interval 6×10−3–40mGy∕s together with a good radiation hardness, suggesting possible application in low-dose monitoring.