@article {Agrup:1994:0003-7028:1118, author = "Agrup, Sara and Alden, Marcus", title = "Measurements of the Collisionally Quenched Lifetime of CO in Hydrocarbon Flames", journal = "Applied Spectroscopy", volume = "48", number = "9", year = "1994", abstract = "Time-resolved laser-induced fluorescence (LIF) from CO molecules in hydrocarbon flames was studied. Collisional quenching constants were evaluated on the basis of the exponential decays. Effective lifetime in a methane/oxygen flame was observed to vary between 250 and 400 ps depending on the position within the flame, and from 400 to 600 ps in the non-sooty parts of an ethylene/air flame. Fluorescence, constituting simultaneous spatially and temporally resolved decays, was also registered from various sections along a laser beam that probed different parts of the flame. Spectral recordings revealed not only the expected CO peaks but also, in the ethylene flame, laser-induced emission from C2 Swan bands and from polyaromatic hydrocarbon (PAH) emission that affected the fluorescence time decay in the sooty part of the flame.", pages = "1118-1124", url = "http://www.ingentaconnect.com/content/sas/sas/1994/00000048/00000009/art00008", doi = "doi:10.1366/0003702944029514", keyword = "Laser-induced fluorescence, Flame radicals, Collisional quenching rate, CO" }