Radiation hardness of Ce-doped sol-gel silica fibers for high energy physics applications

Francesca Cova, Federico Moretti, Mauro Fasoli, Norberto Chiodini, Kristof Pauwels, Etiennette Auffray, Marco Toliman Lucchini, Stefania Baccaro, Alessia Cemmi, Hana Bártová, Anna Vedda

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Abstract

The results of irradiation tests on Ce-doped sol-gel silica using x- and γ-rays up to 10 kGy are reported in order to investigate the radiation hardness of this material for high-energy physics applications. Sol-gel silica fibers with Ce concentrations of 0.0125 and 0.05 mol. % are characterized by means of optical absorption and attenuation length measurements before and after irradiation. The two different techniques give comparable results, evidencing the formation of a main broad radiation-induced absorption band, peaking at about 2.2 eV, related to radiation-induced color centers. The results are compared with those obtained on bulk silica. This study reveals that an improvement of the radiation hardness of Ce-doped silica fibers can be achieved by reducing Ce content inside the fiber core, paving the way for further material development.
Original languageEnglish
Pages (from-to)903 - 906
Number of pages4
JournalOptics Letters
Volume43
Issue number4
DOIs
Publication statusPublished - 1 Feb 2018
Externally publishedYes

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All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics

Cite this

Cova, F., Moretti, F., Fasoli, M., Chiodini, N., Pauwels, K., Auffray, E., Lucchini, M. T., Baccaro, S., Cemmi, A., Bártová, H., & Vedda, A. (2018). Radiation hardness of Ce-doped sol-gel silica fibers for high energy physics applications. Optics Letters, 43(4), 903 - 906. https://doi.org/10.1364/OL.43.000903