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Image fiber reduced in irradiation-induced loss by photobleaching

机译：图像纤维通过光漂白减少了辐射引起的损失

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Protection of an image fiber against irradiation-induced loss by utilizing photobleaching (increase-suppressing effect of light energy on light absorption) has been demonstrated for the first time. Photobleaching effects on the silica glass image fiber were investigated in detail. I evaluated photobleaching characteristics of the fiber by using He-Cd laser, a xenon lamp, and a D_2 lamp as photobleaching light sources. Fibers were irradiated at two levels of dosage: 300 and 10~4 R/h. The thermal effect on photobleaching was also evaluated by comparing the effect at 28 and 70℃. A comparison of light sources for photobleaching have been shown a xenon lamp is the most effective and a wavelength range 0.3-0.36 μm contributes to photobleaching. Based on these evaluation results, through the xenon lamp bleaching, I have succeeded in elongating the useful life time of an image fiber in a 300 R/h gamma-ray environment to more than five times that of an unbleached fiber for the first time.
机译：首次证明了通过利用光漂白保护图像纤维免受辐照引起的损失（光能对光吸收的抑制作用）。详细研究了对石英玻璃图像纤维的光漂白作用。我通过使用He-Cd激光，氙气灯和D_2灯作为光漂白光源来评估纤维的光漂白特性。纤维以两种剂量水平照射：300和10〜4 R / h。还通过比较28和70℃下的光漂白效应来评估其对光漂白的热效应。对用于光漂白的光源的比较显示，氙气灯最有效，并且波长范围0.3-0.36μm有助于光漂白。根据这些评估结果，通过氙灯漂白，我成功地将图像纤维在300 R / h伽马射线环境中的使用寿命延长到首次超过未漂白纤维的五倍。

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