Electronic Military & Defense Annual Resource

3rd Edition

Electronic Military & Defense magazine was developed for engineers, program managers, project managers, and those involved in the design and development of electronic and electro-optic systems for military, defense, and aerospace applications.

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Techniques will be to make a version that complies with military specifications and can be used in the field. With a detection sensitivity low enough that even ammunition can be detected, the analyzer could also be used at security checkpoints and shipping facilities to control the spread of illegal arms by limiting the availability of black market ammunition and by catching any clips of ammunition that terrorists might attempt to smuggle through security. Figure 2: Data taken on trace levels of nitroglycerine vapor from a chromatography standard (AccuStandard) show a signal of 3 ppb is easily detected relative to the baseline. James Hargrove, Ph.D., founded ALTI LLC (Activated Light Technology Industries) after 20 years of laboratory experience in the areas of analytical, physical, and environmental chemistry. David Szpunar, associate professor at Roosevelt University, holds a Ph.D. in physical chemistry from the University of Chicago studying reaction dynamics. The authors wish to thank James Rollins Bailey for his assistance with manuscript preparation. is then used to get a baseline reading, and then any difference gives the sample response. Dividing the difference in decay rates by the speed of light, the absorption coefficient is obtained and can be converted to concentration by the known cross section of NO2. This analog detection method that amplifies the signal but not the noise (U.S. patents 8098377 and 8351040) causes the resulting signal to be limited primarily by the optical noise known as the photon limit. A light bar on a laptop computer indicates the concentration of the explosives and gives Do you need help meeting your EMI/EMC requirements? Did you just fail your an indication of whether the threshold level of EMI test? Is physical size a limitation? 5 ppb of explosive odor has been exceeded. This signal can then be sent to a smartphone for ITʼS TIME TO GET WHAT YOU NEED. standoff observation. By mounting the analyzer Visit Us Online! Custom filters in any shape/size/configuration on a small robot, the user would never need to Any voltage/frequency/current/power www.captorcorp.com be in close proximity to the suspicious package Prototypes through production or object. For over 40 years, Captorʼs superior engineering and design has meant quality, Test runs with chilled nitroglycerine (NG) taken economy, and outstanding service. Call now for more details. at Roosevelt University on gas chromatography standards with a trace amount of explosives in methanol show a small signal due to the solvent effect on the explosives' vapor pressure, but a detectable level well above the 1 ppb noise level (Figure 2). This technology is currently published in more detail as a U.S. patent Quality. Expertise. Solutions. application (U.S. 20130017618). This technology is currently in the prototype phase. The prototype, or a beta version built from it, is ready for field-testing and generation 5040 S. County Rd., Tipp City, Ohio 45371 • Phone: (937) 667-8484 • Fax: (937) 667-5133 of a receiver operator characteristic curve (ROC www.captorcorp.com © 2007 Captor Corporation curve). The next phase after proof of principle Need an EMI Filter? Electronic Military & Defense ■ www.vertmarkets.com/electronics 23

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