16 May 2013 Detailed investigation of OH-LIF spectrum in methane/air flame
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Proceedings Volume 8796, 2nd International Symposium on Laser Interaction with Matter (LIMIS 2012); 87961C (2013) https://doi.org/10.1117/12.2011127
Event: 2nd International Symposium on Laser Interaction with Matter (LIMIS 2012), 2012, Xi'an, Shaanxi, China
Abstract
Laser induced fluorescence has the potential to get two dimension temperature and concentration map in combustion. For understanding the fluorescence technology exactly, A detailed experiment has been developed to investigate the fluorescence spectrum. The time variation of spectrum is first presented by changing the pump-probe time delay. And this is followed by demonstrate the response of fluorescence to laser excitation. As showed by the experiment result, The intensity ratio of the (1, 1) and (0, 0) fluorescence band was varied both with time and the exiting laser line, we attribute this phenomenon to the difference rotational distribution of excited OH. And the new rule, which exciting a specific rotational level in the A2Σ(υ ' =1) excited state from two difference rotational levels in the X 2Π(υ " = 0) ground state, was experimental confirmed, and this will be a foundation to the future two line laser induced fluorescence thermometry.
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Guohua Li, Guohua Li, Jingfeng Ye, Jingfeng Ye, Zhenrong Zhang, Zhenrong Zhang, Zhiyun Hu, Zhiyun Hu, } "Detailed investigation of OH-LIF spectrum in methane/air flame", Proc. SPIE 8796, 2nd International Symposium on Laser Interaction with Matter (LIMIS 2012), 87961C (16 May 2013); doi: 10.1117/12.2011127; https://doi.org/10.1117/12.2011127
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