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Proceedings Paper

Studies of radioluminescence in fused silica core fibers
Author(s): Kentaro Toh; Tatsuo Shikama; Tsunemi Kakuta; Shinji Nagata; Bun Tsuchiya; Chizuo Mori; Junichi Hori; Takeo Nishitani
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Paper Abstract

Strong radioluminescence band and peaks were observed in fused silica core optical fibers under irradiation in fission reactors of Japan Materials Testing Reactor (JMTR) and in gamma-irradiation facility. A broad band in 400-1700 nm could be attributed to Cerenkov radiation, whose intensity was proportional to inverse of the third power of wavelength. The optical intensity of the peak at 450 nm, that was considered to be generated by oxygen vacancies, was proportional to the reactor power under the electronic excitation dose rate up to 5.0 x 103 Gy/s, and the dynamic range was at least more than five orders of magnitude. The peak intensity depends on details of silica microstructures and became twice after annealing at 773K. By using these radioluminescence peak and band, wide range dosimetry could be actualized in heavy radiation environments.

Paper Details

Date Published: 26 November 2002
PDF: 6 pages
Proc. SPIE 4786, Penetrating Radiation Systems and Applications IV, (26 November 2002); doi: 10.1117/12.451745
Show Author Affiliations
Kentaro Toh, Tohoku Univ. (Japan)
Tatsuo Shikama, Tohoku Univ. (Japan)
Tsunemi Kakuta, Japan Atomic Energy Research Institute (Japan)
Shinji Nagata, Tohoku Univ. (Japan)
Bun Tsuchiya, Tohoku Univ. (Japan)
Chizuo Mori, Aichi Institute of Technology (Japan)
Junichi Hori, Japan Atomic Energy Research Institute (Japan)
Takeo Nishitani, Japan Atomic Energy Research Institute (Japan)

Published in SPIE Proceedings Vol. 4786:
Penetrating Radiation Systems and Applications IV
H. Bradford Barber; Hans Roehrig; F. Patrick Doty; Lisa J. Porter; Edward J. Morton, Editor(s)

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