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Laser-induced fluorescence decay lifetimes of shock-heated NO (A 2Σ+) (1991)

Meier, U. E. ; Raiche, G. A. ; Crosley, D. R. ; [weitere]

Springer

Applied physics 53 (1991), S. 138-141

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Details

ISSN: 1432-0649

Schlagwort(e): 34.50Gb

Quelle: Springer Online Journal Archives 1860-2000

Thema: Physik

Notizen: Abstract Radiative emission in the NO γ-band system occurs when air at a few Torr initial pressure is shock-heated at sufficiently high temperatures of 3500–7000 K. Emission spectra of this system in shocks indicate that collisional quenching of the emitting A 2Σ+ state is a critical quantity controlling the intensity. Quenching of excited NO by NO itself has been measured using direct time decay of laser-induced fluorescence in the shock tube at 3500 K. The cross section (2−σ error) is 59±20 Å2, compared to the room temperature value 37±8 Å2. At 3500 K, N2 also quenches NO with a cross section ∼2 Å2, much larger than the value at 300 K.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1007/BF00330228

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