Abstract

The necessity to study the oxygen activity of aqueous media in the flowing state to solve various problems has been substantiated. It has been found that emitted γ-quanta as a result of decay of ¹⁶N nuclei with energy more than 9 MeV cause the formation of additional color centers and reversible optical defects in the fiber. Their appearance leads to increased radiation-induced losses in the optical fiber, which reduce the power of laser radiation transmitted through it. A new optical method has been developed that makes it possible to study the nature of oxygen activity change by the number of γ-quanta emitted by ¹⁶N nuclei when the liquid moves along the pipeline. For the first time, the nature of the change in the spectral distribution of the number of ¹⁶N nuclei emitted as a result of oxygen activity was investigated, and its features in the current flow were determined. In order to realize long-term studies of oxygen activity, a method was proposed to restore optical properties of fiber in the presence of background radioactive radiation.

中文翻译：

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研究流动液体中氧活度的新光学方法

摘要

研究流动状态下水介质的氧活度以解决各种问题的必要性已得到证实。研究发现，由于能量超过 9 MeV 的¹⁶ N 原子核衰变而发射的 γ 量子会导致光纤中形成额外的色心和可逆光学缺陷。它们的出现导致光纤中辐射引起的损耗增加，从而降低了通过光纤传输的激光辐射的功率。开发了一种新的光学方法，可以通过液体沿管道移动时¹⁶ N 原子核发射的 γ 量子数量来研究氧活度变化的性质。首次研究了由于氧活度而发射的¹⁶ N 核数的光谱分布变化的性质，并确定了其在电流中的特征。为了实现氧活度的长期研究，提出了一种在背景放射性辐射存在下恢复纤维光学性能的方法。