γ and fission‐reactor radiation effects on the visible‐range transparency of aluminum‐jacketed, all‐silica optical fibers
γ and fission‐reactor radiation effects on the visible‐range transparency of aluminum‐jacketed, all‐silica optical fibers
复制标题
γ和裂变反应堆辐射对铝护套全二氧化硅光纤可见光范围透明度的影响
DOI：
10.1063/1.363107
复制
发表时间：
1996
影响因子：
3.2
通讯作者：
D. Griscom
中科院分区：
文献类型：
--
作者：
D. Griscom
对采用不同技术制造的二氧化硅芯材料的四根铝护套、掺氟二氧化硅包层光纤进行顺序 60Co-γ 射线和裂变反应堆辐照（分别在~20 和 40°C 下）、中间等温退火（~20°C）和最终等时退火（至 600°C），同时监测辐射引起的吸收光谱在〜400–1000 nm范围内。两根低OH/低氯芯光纤（其中一根掺杂了0.5质量%的氟）均在660和760 nm处产生了谱带，对于~102-106 Gy(Si)范围内的剂量超过了10 000 dB/km；然而，到 γ 辐射阶段结束时，这些频带下降至 <1000 dB/km [12 MGy(Si) at 5.6 Gy(Si)/s]。所有光纤都显示出“紫外带尾”，这是高氯芯纤维中最强的，以及~600-630 nm范围内的谱带，通常归因于非桥接氧空穴中心（NBOHC）。在 γ 辐射阶段，NBOHC 能带的强度被证明强烈依赖于......
Four aluminum‐jacketed, fluorine‐doped silica clad optical fibers with silica core materials fabricated by differing technologies were subjected to sequential 60Co‐γ ray and fission‐reactor irradiations (at ∼20 and 40 °C, respectively), an intervening isothermal anneal (∼20 °C), and a final isochronal anneal (to 600 °C) while monitoring the radiation‐induced absorption spectra in the range ∼400–1000 nm. The two low‐OH/low‐chloride core fibers (one of which was doped with 0.5 mass % fluorine) both developed bands at 660 and 760 nm which exceeded 10 000 dB/km for doses in the range ∼102–106 Gy(Si); however, these bands declined to <1000 dB/km by the end of the γ‐irradiation phase [12 MGy(Si) at 5.6 Gy(Si)/s]. All fibers displayed an ‘‘UV band tail,’’ which was the strongest in the high‐chloride core fiber, as well as bands in the range ∼600–630 nm generally attributed to nonbridging‐oxygen hole centers (NBOHCs). During the γ‐irradiation phase the strengths of the NBOHC bands proved to be strongly dependent ...