| 光谱学与光谱分析 |
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| Spectrum Studies of Ignition Characteristic in Quick Reaction of Benzene |
| WU Jin-he1,2,YAN Zheng-xin1,2,YE Song1,HU Dong2,YANG Xiang-dong1* |
1. Institute of Atomic and Molecular Physics, Sichuan University, Chengdu 610065, China
2. National Key Laboratory for Shock Wave and Detonation Physics Research, Institute of Fluid Physics, China Academy of Engineering Physics, Mianyang 621900, China |
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Abstract A new optical spectroscopy system consisting of a monochromator, photomultiplier tubes (PMT), piezoelectric pressure sensor and digital phosphor oscilloscope was established to study spectrum and ignition delay time of benzene in quick reaction in a high temperature shock tube. A new method of determining ignition delay time of energetic materials behind incident shock wave is proposed. Several important products, such as H, C2 and CH, were determined in sequence of emergence time. The reaction mechanism of formation of carbon was introduced when benzene was driven under shock compression. The results indicate that in spite of the variety of Mach number, atom H always emerged first, indicating that the pyrolysis of benzene started with C—H bond instead of C—C bond. The results show that applying spectrum techniques can preferably study the ignition characteristic of benzene in quick reaction. Measuring ignition delay time by means of a prior emerged intermediate product (atom H) is more accurate than that with white color technique widely used home and abroad, and furthermore, can obviously reduce the times of experiment.
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Received: 2006-05-10
Accepted: 2006-08-20
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Corresponding Authors:
YANG Xiang-dong
E-mail: xdyang@scu.edu.cn
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| Cite this article: |
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WU Jin-he,YAN Zheng-xin,YE Song, et al. Spectrum Studies of Ignition Characteristic in Quick Reaction of Benzene[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2007, 27(12): 2396-2398.
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| URL: |
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https://www.gpxygpfx.com/EN/Y2007/V27/I12/2396 |
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