title: Spatially resolved trace detection of HCl in flames with mid-infrared polarization spectroscopy.
abstract: Sensitive and nonintrusive detection of HCl in reactive gas flows with high spatial and temporal resolution manner has for the first time (to our knowledge) been demonstrated using mid-infrared polarization spectroscopy (IRPS). Trace levels of HCl were prepared in an atmospheric pressure premixed CH4/O2/Ar flat flame by seeding a small amount of chloroform into the Ar flow. Detection of HCl with IRPS in the burnt region of the stoichiometric flame was performed by probing the fundamental ro-vibration transitions with a 3.2 microm tunable pulsed laser. The quantitative nature, the detection sensitivity, and the potential spectral interferences from water were investigated.
authors: Division of Combustion Physics, Lund University, Lund, Sweden. zhongshan.li@forbrf.lth.se
authors: Z S
authors: ZS
authors: Li
authors: Z W
authors: ZW
authors: Sun
authors: B
authors: B
authors: Li
authors: M
authors: M
authors: Aldén
authors: M
authors: M
authors: Försth