title: Highly range-resolved ammonia detection using near-field picosecond differential absorption lidar.
abstract: Ammonia detection is highly relevant for combustion in boilers and furnaces since NH3 is able to suppress nitric oxide levels by catalytic as well as non-catalytic reduction. The mixing of ammonia with flue gases is an important parameter to obtain efficient non-catalytic reduction. In this paper picosecond DIAL was used for range-resolved, single ended, NH3 detection, utilizing a tunable picosecond laser source. The absorption spectrum of the A(ν2 = 1) ← X(ν2 = 0) band was recorded and 212.2 and 214.5 nm was selected as the on- and off-resonance wavelength, respectively. One-dimensional concentration profiles with various NH3 concentration distributions are presented. The detection limit was found to be 40 ppm with a spatial resolution of 16 cm.
authors.affiliation: Lund University, Division of Combustion Physics, Box 118, 221 00 Lund, Sweden. billy.kaldvee@forbrf.lth.se
authors.forename: Billy
authors.initials: B
authors.lastname: Kaldvee
authors.forename: Christian
authors.initials: C
authors.lastname: Brackmann
authors.forename: Marcus
authors.initials: M
authors.lastname: Aldén
authors.forename: Joakim
authors.initials: J
authors.lastname: Bood
mesh_terms: D000042:Absorption; D000641:Ammonia / Q000032:analysis*; D004867:Equipment Design; D019544:Equipment Failure Analysis; D010783:Photometry / Q000295:instrumentation*; D011825:Radar / Q000295:instrumentation*
chemical_list: D000641:Ammonia