Studies of radioluminescence in fused silica core fibers

Kentaro Toh; Tatsuo Shikama; Tsunemi Kakuta; Shinji Nagata; Bun Tsuchiya; Chizuo Mori; Junichi Hori; Takeo Nishitani

doi:10.1117/12.451745

26 November 2002 Studies of radioluminescence in fused silica core optical fibers

Kentaro Toh, Tatsuo Shikama, Tsunemi Kakuta, Shinji Nagata, Bun Tsuchiya, Chizuo Mori, Junichi Hori, Takeo Nishitani

Proceedings Volume 4786, Penetrating Radiation Systems and Applications IV; (2002) https://doi.org/10.1117/12.451745
Event: International Symposium on Optical Science and Technology, 2002, Seattle, WA, United States

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.

Citation Download Citation

Kentaro Toh, Tatsuo Shikama, Tsunemi Kakuta, Shinji Nagata, Bun Tsuchiya, Chizuo Mori, Junichi Hori, and Takeo Nishitani "Studies of radioluminescence in fused silica core optical fibers", Proc. SPIE 4786, Penetrating Radiation Systems and Applications IV, (26 November 2002); https://doi.org/10.1117/12.451745

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