[Determination of reaction products of epoxypropane in the process of deflagration to detonation transition by emission spectroscopy].
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 micros 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.
Li
Ping
P
Institute of Atomic and Molecular Physics, Sichuan University, Chengdu 610065, China.
Hu
Dong
D
Yuan
Chang-Ying
CY
Xiao
Hai-Bo
HB
Liu
Jun-Chao
JC
Sun
Zhu-Mei
ZM
Dong
Shi
S