To facilitate the development of molten salt reactor technologies, a fundamental understanding of the physical and chemical properties of molten salts under the combined conditions of high temperature and intense radiation fields is necessary. Optical spectroscopic (UV-Vis-near IR) and electrochemical techniques are powerful analytical tools to probe molecular structure, speciation, thermodynamics, and kinetics of solution dynamics. Here, we report the design and fabrication of three custom-made apparatus: (i) a multi-port spectroelectrochemical furnace equipped with optical spectroscopic and electrochemical instrumentation, (ii) a high-temperature cell holder for time-resolved optical detection of radiolytic transients in molten salts, and (iii) a miniaturized spectroscopy furnace for the investigation of steady-state electron beam effects on molten salt speciation and composition by optical spectroscopy. Initial results obtained with the spectroelectrochemical furnace (i) and high-temperature cell holder (ii) are reported.

中文翻译：

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用于熔盐原位光谱、电化学和辐射分解研究的高温炉和池架的设计和性能

为了促进熔盐反应堆技术的发展，需要对高温和强辐射场的组合条件下熔盐的物理和化学性质有一个基本的了解。光谱（UV-Vis-near IR）和电化学技术是探测分子结构、形态、热力学和溶液动力学动力学的强大分析工具。在这里，我们报告了三种定制设备的设计和制造：（i）配备光谱和电化学仪器的多端口光谱电化学炉，（ii）用于辐射分解瞬态时间分辨光学检测的高温电池架在熔盐中，(iii) 微型光谱炉，用于通过光谱研究稳态电子束对熔盐形态和成分的影响。报告了使用光谱电化学炉 (i) 和高温电池架 (ii) 获得的初步结果。