The article presents the results of a study of the concept of a distributed calorimetric fiber dosimeter based on the effect of stimulated–Brillouin scattering. The sensor design comprises one or several thermally insulated spherical sensing elements made of a material with a high γ-radiation attenuation coefficient fixed with a certain distance on an optical fiber. The change in the temperature of the sensor due to interaction with ionizing radiation is monitored using a stimulated Brillouin scattering analyzer, which allows temperature measurement over the entire length of the optical fiber at distances of up to several tens of kilometers. The results of model calculations of the efficiency of spherical sensor elements made of various materials are presented. The sensitivity range of the proposed dosimeter is estimated and the results of a preliminary experiment on the interaction of the sensor with γ-radiation are given. It is shown that the working range of the dosimeter is approximately 130 Gy/h–700 kGy/h.

中文翻译：

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基于受激布里渊散射的分布式量热纤维剂量计模型

本文介绍了基于受激布里渊散射效应的分布式量热纤维剂量计概念的研究结果。传感器设计包括一个或几个绝热的球形传感元件，这些元件由高γ辐射衰减系数的材料制成，并以一定距离固定在光纤上。使用受激布里渊散射分析仪可监测由于与电离辐射的相互作用而引起的传感器温度变化，该布里渊散射分析仪可在长达数十公里的距离内测量光纤的整个长度。给出了由各种材料制成的球形传感器元件效率的模型计算结果。估算了拟议的剂量计的灵敏度范围，并给出了传感器与γ辐射相互作用的初步实验结果。结果表明，剂量计的工作范围约为130 Gy / h–700 kGy / h。