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通过部份预混的富燃料液化石油气/空气火焰中各部份的OH(A~(2∑~+) X ~(2Π))的激光诱导荧光信号进行逐点检测,获得了OH(X)基在火焰中央纵剖面上精细的二维等浓度线图。OH(X)在外焰边缘上分布最浓,是自内向外扩散的H原子与O原子相遇而引起反应的结果。同时一部份OH(A)基的生成,发出了紫外的A→X化学发光,形成了外焰的轮廓。
The OH (A ~ (2Σ ~ +) X ~ (2Π)) laser-induced fluorescence signals of some premixed fuel-rich liquefied petroleum gas / air flames were detected point by point. ) Base A fine two-dimensional iso-concentration line graph on the flame’s central longitudinal section. OH (X) is the most concentrated on the outer flame edge, which is the result of the reaction of H atom and O atom which diffused from inside to outside. At the same time part of the OH (A) generation, issued a UV A → X chemiluminescence, forming the outline of the outer flame.