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Proceedings Paper

Radiation effects of 14-MeV fusion neutrons on optical transmission properties of fused silica core optical fibers
Author(s): Bun Tsuchiya; Tsunemi Kakuta; Shinji Nagata; Junichi Hori; Takeo Nishitani; Kentaro Toh; Tatsuo Shikama
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Paper Abstract

Optical transmission properties of optical fibers with a purified and undoped fused-silica core were investigated under irradiation by 14 MeV fast neutrons in the temperature range from room temperature to 573 K at a fast neutron irradiation facility of Fast Neutron Source (FNS). Growth of optical absorption in the wavelength range of 420-630 nm, which includes a well-known absorption peak called Non-Bridging-Oxygen-Hole-Center (NBOHC), took place due to the neutron irradiations. Change of the optical absorption depended strongly on the irradiation temperature. Particularly, growth rate of the radiation-induced optical absorption at the wavelength of 630 nm decreased with increase of the irradiation temperature up to 473 K, because of the dynamic recovery of the initial structural imperfections and the radiation-induced defects.

Paper Details

Date Published: 26 November 2002
PDF: 5 pages
Proc. SPIE 4786, Penetrating Radiation Systems and Applications IV, (26 November 2002); doi: 10.1117/12.451746
Show Author Affiliations
Bun Tsuchiya, Tohoku Univ. (Japan)
Tsunemi Kakuta, Japan Atomic Energy Research Institute (Japan)
Shinji Nagata, Tohoku Univ. (Japan)
Junichi Hori, Japan Atomic Energy Research Institute (Japan)
Takeo Nishitani, Japan Atomic Energy Research Institute (Japan)
Kentaro Toh, Tohoku Univ. (Japan)
Tatsuo Shikama, Tohoku Univ. (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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