The possibilities of using high-resolution terahertz spectroscopy for studying the composition of vapors of energy materials during their thermal decomposition were investigated. A high resolution nonstationary spectrometer for gas analysis based on the phase-shift of 115–178 GHz radiation acting on gas and a system heating the measuring cell and the reaction volume were developed and implemented. Possible mechanisms of thermal decomposition were found for four substances (ammonium nitrate, pentaerythritetetranitrate, octogen, triaminotrinitrobenzene) and sets of substances appearing during their thermolysis were determined experimentally. The results obtained show that high-resolution spectroscopy operating on nonstationary effects is a promising technique for qualitative analysis of multicomponent gas mixtures of the thermal decomposition products of explosives, including the appearance of products at different stages of sample heating. Besides the developed method can be used for the analysis of gas mixtures (gases, vapors, natural, and thermal decomposition products) of various origins for many applications (biology, medicine, agricultural applications).

中文翻译：

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用于研究高能材料热分解过程的高分辨率太赫兹光谱

研究了使用高分辨率太赫兹光谱研究能源材料在热分解过程中蒸汽组成的可能性。开发并实施了一种用于气体分析的高分辨率非平稳光谱仪，该光谱仪基于作用于气体的 115-178 GHz 辐射的相移以及加热测量池和反应体积的系统。发现了四种物质（硝酸铵、季戊四醇四硝酸盐、octogen、三氨基三硝基苯）的热分解的可能机制，并通过实验确定了在它们的热分解过程中出现的一组物质。获得的结果表明，对非平稳效应操作的高分辨率光谱是定性分析炸药热分解产物的多组分气体混合物的一种很有前途的技术，包括在样品加热的不同阶段产物的出现。此外，开发的方法可用于分析多种来源的气体混合物（气体、蒸汽、天然和热分解产物），用于许多应用（生物学、医学、农业应用）。