Improvement of Radiation Resistance of Pure Silica Core Fibers by Hydrogen Treatment
Improvement of Radiation Resistance of Pure Silica Core Fibers by Hydrogen Treatment
复制标题
氢处理提高纯二氧化硅芯纤维的耐辐射性能
DOI：
10.1143/jjap.24.1224
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发表时间：
1985
影响因子：
1.5
通讯作者：
K. Yahagi
中科院分区：
文献类型：
--
作者：
K. Nagasawa;Yutaka Hoshi;Y. Ohki;K. Yahagi
已知具有玻璃包层的纯二氧化硅芯光纤在γ射线照射下比具有硅树脂包层的类似光纤在可见波长区域产生更大的吸收。这种吸收是一个严重的问题，特别是在辐射环境中使用的图像引导纤维，如在核电站。这种吸收归因于非桥氧空穴中心和键断裂引起的E'中心等缺陷中心的形成。本文提出了一种新的、简单的氢处理方法来提高纯石英光纤的抗辐射性能。通过这种方法进行的后处理可以显著降低现有的辐射诱导吸收，而预处理可以抑制辐射诱导吸收的增加。
A pure silica core fiber with glass cladding is known to produce larger absorption in the visible wavelength region under γ-ray irradiation than a similar fiber with silicone cladding. This absorption is a serious problem, especially in image-guiding fibers used in radiation environments such as in nuclear power plants. The absorption is attributed to the formation of defect centers such as non-bridging oxygen hole centers and E' centers induced by bond scission. A new and simple method of hydrogen treatment to improve the radiation resistance of an optical fiber with a pure silica core has been proposed. Post-treatment by this method can significantly reduce existing radiation-induced absorption, while preliminary treatment can suppress the increase of the radiation-induced absorption.