Nitric oxide flow tagging in unseeded air

被引：55

作者：

Dam, N ^{[1
]}

Klein-Douwel, RJH ^{[1
]}

Sijtsema, NM ^{[1
]}

ter Meulen, JJ ^{[1
]}

机构：

[1] Univ Nijmegen, Dept Appl Phys, NL-6525 ED Nijmegen, Netherlands

来源：

OPTICS LETTERS | 2001年 / 26卷 / 01期

关键词：

D O I：

10.1364/OL.26.000036

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

A scheme for molecular tagging velocimetry is presented that can be used in air flows without any kind of seeding. The method is based on the local and instantaneous creation of nitric oxide (NO) molecules from Nz and O-2 in the waist region of a focused ArF excimer laser beam. This NO distribution is advected by the flow and can be visualized any time later by laser-induced fluorescence in the gamma bands. The creation of NO is confirmed by use of an excitation spectrum. Two examples of the application of the new scheme for air-flow velocimetry are given in which single laser pulses are used for creation and visualization of NO. (C) 2001 Optical Society of America OCIS codes: 120.7250, 280.2490, 280.7060, 280.7250.

引用

页码：36 / 38

页数：3

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