Z. Y. Zhou, Y. Wang, X. F. Tang, W. H. Wu and F. Qi (2013) A new apparatus for study of pressure-dependent laminar premixed flames with vacuum ultraviolet photoionization mass spectrometry. Journal/Review Of Scientific Instruments 84 7. [English]
Web link: http://dx.doi.org/10.1063/1.4773541
Keywords: SYNCHROTRON VUV PHOTOIONIZATION, ALKYLPEROXY RADICALS, COMBUSTION, STABILITY, CHEMISTRY, OXIDATION, CATIONS
Abstract: We report a home-made combustion apparatus for study of pressure-dependent laminar premixed flames with tunable vacuum ultraviolet photoionization mass spectrometry. The instrument consists of a flame chamber, a photoionization chamber with a single-stage sampling system, an ion transfer/storage system, and an orthogonal-acceleration reflectron time-of-flight mass spectrometer. Preliminary results of fuel-rich C2H4/O-2/Ar flames at pressures of 30, 150, and 760 Torr have been obtained with this instrument. Compared to previous instruments [T. A. Cool, A. McIlroy, F. Qi, P. R. Westmoreland, L. Poisson, D. S. Peterka, and M. Ahmed, Rev. Sci. Instrum. 76, 094102 (2005); F. Qi, R. Yang, B. Yang, C. Q. Huang, L. X. Wei, J. Wang, L. S. Sheng, and Y. W. Zhang, Rev. Sci. Instrum. 77, 084101 (2006)], performances of the new apparatus have higher mass resolution (similar to 3500 at m/z = 40), better detection limit (<1 ppm), and broader dynamic range (better than 5 order of magnitude). (C) 2013 American Institute of Physics.