| Single-pulse CARS spectra in solid propellant combustion at atmosphere pressure |
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| 作者姓名： | 胡志云 刘晶儒 张振荣 关小伟 黄梅生 叶锡生 |
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| 作者单位： | Northwest Institute of Nuclear Technology，Xi'an 710024，Northwest Institute of Nuclear Technology，Xi'an 710024，Northwest Institute of Nuclear Technology，Xi'an 710024，Northwest Institute of Nuclear Technology，Xi'an 710024，Northwest Institute of Nuclear Technology，Xi'an 710024，Northwest Institute of Nuclear Technology，Xi'an 710024 |
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| 摘 要： | The unstable-resonator spatially enhanced detection (USED) coherent anti-stokes Raman spectroscopy (CARS) measurements of temperature and N2 concentration in the combustion of solid propellant at atmosphere pressure are reported. The USED CARS measurement system has a high spatial solution of ~ 0.1 mm in diameter and 3 mm in length, and permits instantaneous measurement at 10-Hz rate. The single-pulse N2 Q-branch CARS spectra have been obtained from the propellant combustion. The temperatures and N2 concentrations of the propellant flame at different height have been achieved by fitting the experimental data to theoretical spectra. The results indicate that the temperature is up to ~ 2500 K with N2 concentration in a range from 10% to 26%.
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Single-pulse CARS spectra in solid propellant combustion at atmosphere pressure |
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| Abstract: | The unstable-resonator spatially enhanced detection (USED) coherent anti-stokes Raman spectroscopy (CARS) measurements of temperature and N2 concentration in the combustion of solid propellant at atmosphere pressure are reported. The USED CARS measurement system has a high spatial solution of ～ 0.1 mm in diameter and 3 mm in length, and permits instantaneous measurement at 10-Hz rate. The single-pulse N2 Q-branch CARS spectra have been obtained from the propellant combustion. The temperatures and N2 concentrations of the propellant flame at different height have been achieved by fitting the experimental data to theoretical spectra. The results indicate that the temperature is up to～2500 K with N2 concentration in a range from 10% to 26%. |
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