title: Laser in situ monitoring of combustion processes.
abstract: Several examples of laser in situ monitoring of combustion processes are presented. Using a frequency modulated (13)CO(2) waveguide laser, in situ concentrations of NH(3) down to 1 ppm were measured at temperatures up to 600 degrees C in waste incinerators and power or chemical plants. Following ignition of CH(3)OH-O(2) mixtures by a TEA CO(2) laser, gas temperature profiles were measured using rapid scanning tunable diode laser spectroscopy of CO molecules. In laminar CH(4)-air counterflow diffusion flames at atmospheric pressure absolute concentrations, temperatures, and collisional lifetimes of OH radicals were determined by 2-D and picosecond LIF and absorption spectroscopy. Two-dimensional LIF and Mie scattering were used to observe fuel injection and combustion in a diesel engine.
authors.forename: A
authors.initials: A
authors.lastname: Arnold
authors.forename: H
authors.initials: H
authors.lastname: Becker
authors.forename: R
authors.initials: R
authors.lastname: Hemberger
authors.forename: W
authors.initials: W
authors.lastname: Hentschel
authors.forename: W
authors.initials: W
authors.lastname: Ketterle
authors.forename: M
authors.initials: M
authors.lastname: Kollner
authors.forename: W
authors.initials: W
authors.lastname: Meienburg
authors.forename: P
authors.initials: P
authors.lastname: Monkhouse
authors.forename: H
authors.initials: H
authors.lastname: Neckel
authors.forename: M
authors.initials: M
authors.lastname: Schafer
authors.forename: K P
authors.initials: KP
authors.lastname: Schindler
authors.forename: V
authors.initials: V
authors.lastname: Sick
authors.forename: R
authors.initials: R
authors.lastname: Suntz
authors.forename: J
authors.initials: J
authors.lastname: Wolfrum