Radical detection in harsh environments by means of laser-induced fluorescence using a single bidirectional optical fiber

Radical detection in harsh environments by means of laser-induced fluorescence using a single bidirectional optical fiber
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使用单根双向光纤通过激光诱导荧光在恶劣环境中进行自由基检测

DOI:
10.1007/s00340-012-5172-9
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发表时间:
2012
期刊:
Applied Physics B
影响因子:
--
通讯作者:
Horn R.
Horn R.
中科院分区:
--
文献类型:
--
作者:
Schwarz H;Schlögl R;Horn R.

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本文介绍了一种新的实验方法,即利用激光诱导荧光法检测高温气相反应中的羟基自由基。这是通过双向光纤探头实现的,这对于光接入受限的应用是有意义的。已经开发了一种光学装置,其允许使用同一根光纤同时激发和检测荧光。耦合以及激光诱导的散射所造成的并发症的解决,不同的光纤进行比较方面的核心材料组成和几何收集效率。在此基础上,确定了合适的光纤,并在预混层流火焰中进行了OH检测和轮廓测量作为参考实验。
A new experimental method is described enabling detection of hydroxyl radicals (OH) by laser-induced fluorescence in high-temperature gas-phase reactions. This is accomplished by means of a bidirectional optical fiber probe, which is of interest for applications where optical access is limited. An optical setup that allows simultaneous excitation and detection of fluorescence using one and the same fiber has been developed. Complications resulting from coupling as well as laser-induced scattering are addressed, and different fibers are compared with regard to core material composition and geometric collection efficiency. On this basis, a suitable fiber is identified, and OH detection and profile measurements are demonstrated in a premixed laminar flame as reference experiment.
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