title: Two-dimensional temperature measurements in particle loaded technical flames by filtered Rayleigh scattering.
abstract: Filtered Rayleigh scattering (FRS) is applied to determine two-dimensional temperature distributions in a hexamethyldisiloxane loaded propane/air flame intended for combustion chemical vapor deposition processes. An iodine cell as a molecular filter suppresses background scattering, e.g., by particles, while the wings of the spectrally broadened Rayleigh scattering can pass this filter. A frequency-doubled Nd:YAG laser is tuned to a strong absorption line of iodine. The gas temperature is deduced from the transmitted Rayleigh scattering signal. Since FRS also depends on molecule-specific scattering cross sections, the local gas composition of majority species is measured using the Raman scattering technique. Limits and restrictions are discussed.
authors.forename: D
authors.initials: D
authors.lastname: Müller
authors.forename: R
authors.initials: R
authors.lastname: Pagel
authors.forename: A
authors.initials: A
authors.lastname: Burkert
authors.forename: V
authors.initials: V
authors.lastname: Wagner
authors.forename: W
authors.initials: W
authors.lastname: Paa