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Proceedings Paper

Quantitative diagnostics of flame radicals by picosecond LIF spectroscopy
Author(s): A. Offt; A. Knaack; J. Waleswki; Wolfgang Schade
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Paper Abstract

A frequency stabilized distributed feedback dye laser is applied to give Fourier-limited excitation pulses with a duration of 50 ps at 226 nm and 309 nm. Then NO and OH radicals are excited in an atmospheric standard flame (McKenna burner) or in a pressure cell. The time-evolution of the flurorescence is recorded by a Streak camera in a pressure in the picosecond time scale. Quenching rates for NO, with CO2, O2, NO, and N2 are reported. Systematic influences of the direction of polarization of the exciting laser beam on the LIF-decay are discussed as well as sensitivity and detection limits of the picosecond spectroscopy compared to the nanosecond LIF.

Paper Details

Date Published: 20 September 1995
PDF: 11 pages
Proc. SPIE 2506, Air Pollution and Visibility Measurements, (20 September 1995); doi: 10.1117/12.221002
Show Author Affiliations
A. Offt, Univ. Kiel (Germany)
A. Knaack, Univ. Kiel (Germany)
J. Waleswki, Univ. Kiel (Germany)
Wolfgang Schade, Univ. Kiel (Germany)


Published in SPIE Proceedings Vol. 2506:
Air Pollution and Visibility Measurements
Peter Fabian; Volker Klein; Maurus Tacke; Konradin Weber; Christian Werner, Editor(s)

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