Vilmart G, Dorval N, Orain M, Lambert D, Devillers R, Fabignon Y, Attal-Tretout B, Bresson A
Appl Opt. 2018 May 10;57(14):3817-3828. doi: 10.1364/AO.57.003817.
Planar laser-induced fluorescence on atomic iron is investigated in this paper, and a measurement strategy is proposed to monitor the fluorescence of iron atoms with good sensitivity. A model is proposed to fit the experimental fluorescence spectra, and good agreement is found between simulated and experimental spectra. Emission and laser-induced fluorescence measurements are performed in the flames of ammonium perchlorate composite propellants containing iron-based catalysts. A fluorescence signal from iron atoms after excitation at 248 nm is observed for the first time in propellant flames. Images of the spatial distribution of iron atoms are recorded in the flame in which turbulent structures are generated. Iron fluorescence is detected up to 1.0 MPa, which opens the way to application in propellant combustion.
本文研究了原子铁上的平面激光诱导荧光，并提出了一种测量策略来高灵敏度地监测铁原子的荧光。提出了一个模型来拟合实验荧光光谱，模拟光谱与实验光谱之间取得了良好的一致性。在含铁基催化剂的高氯酸铵复合推进剂火焰中进行了发射和激光诱导荧光测量。首次在推进剂火焰中观察到在248nm激发后铁原子的荧光信号。记录了产生湍流结构的火焰中铁原子空间分布的图像。在高达1.0MPa的压力下检测到铁荧光，这为其在推进剂燃烧中的应用开辟了道路。
