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Development of Laser Ionization Mass Spectrometer for detection of unstable species in flames |
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| Authors: | Takashi Nishimura Takahiro Torii Kuniyuki Kitagawa Ashwani K. Gupta |
| Affiliation: | a Department of Applied Chemistry, Graduate School of Engineering, Nagoya University, Furo-Cho, Chikusa-Ku, Nagoya, 464-8603, Japan b EcoTopia Science Institute, Nagoya University, Furo-Cho, Chikusa-Ku, Nagoya 464-8603, Japan c Department of Mechanical Engineering, University of Maryland, College Park, MD 20742, USA |
| Abstract: | Results are presented here on the detection of unstable species formed in flames using a novel Laser Ionization Mass Spectrometry (LIMS) system. The chemical species generated in atmospheric pressure flames were directly introduced into a mass spectrometer operated at high vacuum conditions using a newly developed interface, in which the ionization was induced by laser irradiation. Optimum conditions for the experimental conditions were investigated in order to obtain mass spectra with adequate signal to noise (S/N) ratios. In addition, the distribution profiles of various species in the flame was measured and visualized. The distribution of OH profiles was also measured under the same conditions using Planer Laser Induced Fluorescence (PLIF) diagnostics. The results showed that the profiles of OH distribution by LIMS were in good agreement with those obtained using PLIF diagnostics. |
| Keywords: | Laser Ionization Mass Spectrometry Unstable species Combustion flames Distribution profiles of the species |
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