Nitric oxide flow tagging in unseeded air

N.J. Dam; R.J.H. Klein-Douwel; N.M. Sijtsema; J.J. Meulen, ter

doi:10.1364/OL.26.000036

Nitric oxide flow tagging in unseeded air

N.J. Dam, R.J.H. Klein-Douwel, N.M. Sijtsema, J.J. Meulen, ter

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Abstract

A scheme for molecular tagging velocimetry is presented that can be usedin air f lows without any kind of seeding. The method is based on thelocal and instantaneous creation of nitric oxide (NO) molecules fromN₂ and O₂ in the waist region of a focused ArFexcimer laser beam. This NO distribution is advected by the flow and canbe visualized any time later by laser-induced fluorescence in the γ bands. The creation of NO is confirmed byuse of an excitation spectrum. Two examples of the application of thenew scheme for air-flow velocimetry are given in which single laserpulses are used for creation and visualization of NO.

Original language	English
Pages (from-to)	36-38
Journal	Optics Letters
Volume	26
Issue number	1
DOIs	https://doi.org/10.1364/OL.26.000036
Publication status	Published - 2001

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abstract = "A scheme for molecular tagging velocimetry is presented that can be usedin air f lows without any kind of seeding. The method is based on thelocal and instantaneous creation of nitric oxide (NO) molecules fromN2 and O2 in the waist region of a focused ArFexcimer laser beam. This NO distribution is advected by the flow and canbe visualized any time later by laser-induced fluorescence in the γ bands. The creation of NO is confirmed byuse of an excitation spectrum. Two examples of the application of thenew scheme for air-flow velocimetry are given in which single laserpulses are used for creation and visualization of NO.",

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AB - A scheme for molecular tagging velocimetry is presented that can be usedin air f lows without any kind of seeding. The method is based on thelocal and instantaneous creation of nitric oxide (NO) molecules fromN2 and O2 in the waist region of a focused ArFexcimer laser beam. This NO distribution is advected by the flow and canbe visualized any time later by laser-induced fluorescence in the γ bands. The creation of NO is confirmed byuse of an excitation spectrum. Two examples of the application of thenew scheme for air-flow velocimetry are given in which single laserpulses are used for creation and visualization of NO.

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JF - Optics Letters

SN - 0146-9592

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Nitric oxide flow tagging in unseeded air

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