Determination of Reaction Products of Epoxypropane in the Process of Deflagration to Detonation Transition by Emission Spectroscopy
LI Ping1, 2, HU Dong2, 3, YUAN Chang-ying2, 4, XIAO Hai-bo1, LIU Jun-chao2, SUN Zhu-mei2, 3, DONG Shi2, 3
1. Institute of Atomic and Molecular Physics, Sichuan University, Chengdu 610065, China 2. Institute of High Temperature and High Pressure Physics, Sichuan University, Chengdu 610065, China 3. Institute of Fluid Physics, China Academy of Engineering Physics, Mianyang 621900, China 4. Physics Department, Southwest University of Science and Technology, Mianyang 621002, China
Abstract：After solving problems of the synchronization of the measuring system, the detection of weak light, and the avoidance of false trigger signal, the instantaneous emission spectra of epoxypropane in the process of deflagration to detonation transition (DDT) with the exposure time of 1-16 μs and the resolution of 0.2 nm were measured. The spectra were acquired from side windows of an explosion shock tube 0.1 m in inner diameter and 4.0 m in length. The measuring system is made up of an intensified spectroscopic detector ICCD, a SpectraPro-275 spectrograph, and a digital delay generator DG535. By analyzing the spectra obtained, the reaction products OH, CH, C2, C3, CO, CO2, CHO and CH2O were identified according to their characteristic electronic and vibrational bands, which indicates that these molecules and radicals were produced during the DDT process of epoxypropane. The determination of reaction products can provide experimental basis for analyzing and understanding the microscopic mechanism of DDT process.
李 萍1，2，胡 栋2，3，袁长迎2，4，肖海波1，刘俊超2，孙珠妹2，3，董 石2，3 . 环氧丙烷爆燃转爆轰过程反应产物的光谱法确定[J]. 光谱学与光谱分析, 2005, 25(12): 1916-1919.
LI Ping1, 2, HU Dong2, 3, YUAN Chang-ying2, 4, XIAO Hai-bo1, LIU Jun-chao2, SUN Zhu-mei2, 3, DONG Shi2, 3 . Determination of Reaction Products of Epoxypropane in the Process of Deflagration to Detonation Transition by Emission Spectroscopy . SPECTROSCOPY AND SPECTRAL ANALYSIS, 2005, 25(12): 1916-1919.
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