Optoacoustic measurements of diesel particulate emissions
- 1 December 1979
- journal article
- research article
- Published by AIP Publishing in Journal of Applied Physics
- Vol. 50 (12), 7880-7882
- https://doi.org/10.1063/1.325978
Abstract
Infrared absorption by acetylene and diesel smoke particles was measured using a differential optoacoustic cell driven by a 3.4‐W CO2 laser. Real‐time particle mass concentration measurements are demonstrated. In addition we found the average particle extinction cross sections per unit mass of acetylene and diesel smoke were 0.94±0.1 m2/g and 0.83±0.2 m2/g, respectively, at the 10.6‐μm wavelength.Keywords
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