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Proceedings Paper

Outdoor chamber measurements of biological aerosols with a passive FTIR spectrometer
Author(s): Francis M. D'Amico; Darren K. Emge; Geoffrey J. Roelant
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Paper Abstract

Outdoor measurements of dry bacillus subtilis (BG) spores were conducted with a passive Fourier transform infrared (FTIR) spectrometer using two types of chambers. One was a large open-ended cell, and the other was a canyon of similar dimensions. The canyon exposes the aerosol plume to downwelling sky radiance, while the open-ended cell does not. The goal of the experiments was to develop a suitable test methodology for evaluation of passive standoff detectors for open-air aerosol measurements. Dry BG aerosol particles were dispersed with a blower through an opening in the side of the chamber to create a pseudo-stationary plume, wind conditions permitting. Numerous trials were performed with the FTIR spectrometer positioned to view mountain, sky and mixed mountain-sky backgrounds. This paper will discuss the results of the FTIR measurements for BG and Kaolin dust releases.

Paper Details

Date Published: 27 February 2004
PDF: 11 pages
Proc. SPIE 5268, Chemical and Biological Standoff Detection, (27 February 2004); doi: 10.1117/12.518558
Show Author Affiliations
Francis M. D'Amico, U.S. Army Soldier and Biological Chemical Command (United States)
Darren K. Emge, U.S. Army Soldier and Biological Chemical Command (United States)
Geoffrey J. Roelant, U.S. Army Soldier and Biological Chemical Command (United States)

Published in SPIE Proceedings Vol. 5268:
Chemical and Biological Standoff Detection
James O. Jensen; Jean-Marc Theriault, Editor(s)

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