SYMPOSIA PAPER Published: 01 January 1987
STP25680S

Photobleaching Effects on Radiation-Induced Loss for Silica Glass Image Fiber

Source

The photobleaching effect (annealing effect on light absorption by light energy) on silica glass image fiber was investigated. We evaluated photobleaching characteristics using He-Cd laser, a xenon lamp, and a D2 lamp as photobleaching light sources. Fibers were irradiated at two levels of dosage, 300 rad/h and 104 rad/h. The thermal effect on photobleaching was also evaluated by comparing the effect at 28°C and that at 70°C. The investigations demonstrated the superiority of the xenon lamp and thermal dependency of photobleaching. Furthermore through xenon lamp bleaching, we have succeeded in elongating the usable life span of image fiber in a 300-rad/h gammaray environment to more than five times that for nonbleached fiber.

Author Information

Hayashi, S
Power Reactor and Nuclear Fuel Development Corporation, Naka-Gun, Ibaraki-Ken, Japan
Wada, Y
Power Reactor and Nuclear Fuel Development Corporation, Naka-Gun, Ibaraki-Ken, Japan
Chigusa, Y
Sumitomo Electric Industries, Ltd., Totsika-Ku, Yokohama, Japan
Fujiwara, K
Sumitomo Electric Industries, Ltd., Totsika-Ku, Yokohama, Japan
Hattori, Y
Sumitomo Electric Industries, Ltd., Totsika-Ku, Yokohama, Japan
Matsuda, Y
Sumitomo Electric Industries, Ltd., Totsika-Ku, Yokohama, Japan
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Details
Developed by Committee: E10
Pages: 647–653
DOI: 10.1520/STP25680S
ISBN-EB: 978-0-8031-5017-1
ISBN-13: 978-0-8031-0963-6