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Author Griscom, D. L. ♦ Golant, K. M. ♦ Tomashuk, A. L. ♦ Pavlov, D. V. ♦ Tarabrin, Y. A.
Source United States Department of Energy Office of Scientific and Technical Information
Content type Text
Language English
Subject Keyword INSTRUMENTATION, INCLUDING NUCLEAR AND PARTICLE DETECTORS ♦ PLASMA PHYSICS AND FUSION ♦ OPTICAL FIBERS ♦ FABRICATION ♦ RADIATION HARDENING ♦ ITER TOKAMAK ♦ SURFACE COATING ♦ GAMMA RADIATION ♦ DIAGNOSTIC TECHNIQUES ♦ RADIATION EFFECTS ♦ LOSSES ♦ SILICA ♦ CLADDING ♦ COLOR CENTERS ♦ RADIOLYSIS ♦ ALUMINIUM
Abstract Induced loss spectra in four Al-coated large-core optical fibers are measured in the range 380{endash}1000 nm during and after {sup 60}Co {gamma} irradiation. These fibers had F-doped-silica claddings and synthetic silica core materials produced by different technologies. Measurements were carried out independently in Washington and Moscow using differing techniques but yielding very similar results. The highest radiation resistance is exhibited by two fibers with extremely low OH and Cl contents in their cores, one with a core material containing 0.5 mass{percent} of fluorine, fabricated specially for this study, and one based on KS-4V silica, an original technology developed in Russia. The latter fiber demonstrates a rather flat induced loss spectrum in the visible region at a level of 2{endash}2.5 dB/m for {gamma}-ray doses of {approximately}10 MGy(Si). {copyright} {ital 1996 American Institute of Physics.}
ISSN 00036951
Educational Use Research
Learning Resource Type Article
Publisher Date 1996-07-01
Publisher Place United States
Journal Applied Physics Letters
Volume Number 69
Issue Number 3


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