Share Email Print
cover

Proceedings Paper

Database for chemical weapons detection: first results
Author(s): C. Bellecci; P. Gaudio; M. Gelfusa; S. Martellucci; M. Richetta; P. Ventura; A. Antonucci; F. Pasquino; V. Ricci; A. Sassolini
Format Member Price Non-Member Price
PDF $14.40 $18.00
cover GOOD NEWS! Your organization subscribes to the SPIE Digital Library. You may be able to download this paper for free. Check Access

Paper Abstract

The quick increase of terrorism and asymmetric war is leading towards new needs involving defense and security. Nowadays we have to fight several kind of threats and use of chemical weapons against civil or military objectives is one of the most dangerous. For this reason it is necessary to find equipment, know-how and information that are useful in order to detect and identify dangerous molecules as quickly and far away as possible, so to minimize damage. Lidar/Dial are some of the most powerful optical technologies. Dial technology use two different wavelengths, in order to measure concentration profile of an investigated molecule. For this reason it is needed a "fingerprint" database which consists of an exhaustive collection of absorption coefficients data so to identify each molecule avoiding confusion with interfering ones. Nowadays there is not such a collection of data in scientific and technical literature. We used an FT-IR spectrometer and a CO2 laser source for absorption spectroscopy measurements using cells filled with the investigated molecules. The CO2 source is the transmitter of our DIAL facility. In this way we can make a proper "fingerprint" database necessary to identify dangerous molecules. The CO2 laser has been chosen because it is eye safe and, mainly, because it covers a spectral band where there is good absorption for this kind of molecules. In this paper IR spectra of mustard will be presented and compared to other substances which may interfere producing a false alarm. Methodology, experimental setup and first results are described.

Paper Details

Date Published: 2 October 2008
PDF: 10 pages
Proc. SPIE 7116, Optically Based Biological and Chemical Detection for Defence IV, 71160Q (2 October 2008); doi: 10.1117/12.800193
Show Author Affiliations
C. Bellecci, Univ. of Rome Tor Vergata (Italy)
P. Gaudio, Univ. of Rome Tor Vergata (Italy)
M. Gelfusa, Univ. of Rome Tor Vergata (Italy)
S. Martellucci, Univ. of Rome Tor Vergata (Italy)
M. Richetta, Univ. of Rome Tor Vergata (Italy)
P. Ventura, Univ. of Rome Tor Vergata (Italy)
A. Antonucci, Univ. of Rome Tor Vergata (Italy)
F. Pasquino, NBC Joint Logistic Technical Ctr. (Italy)
V. Ricci, NBC Joint Logistic Technical Ctr. (Italy)
A. Sassolini, NBC Joint Logistic Technical Ctr. (Italy)


Published in SPIE Proceedings Vol. 7116:
Optically Based Biological and Chemical Detection for Defence IV
John C. Carrano; Arturas Zukauskas, Editor(s)

© SPIE. Terms of Use
Back to Top