WHERE SHOULD WE LOOK FOR EXPLOSIVE MOLECULES

Phelan did a major part of this research. Much of this chapter, through Section 4.1, is drawn primarily from his work [1], This work is also reproduced in [la]. Since he was not available to actually write this chapter, the author, who merely coordinated this work as part of a broader project, gratefully acknowledges his debt for these important contributions to him and his co-workers. S. W. Webb, 

Barnett, and W. B. Chambers of Sandia National Laboratories and T. F. Jenkins, D. C. Leggett, and their colleagues of the U.S. Army Engineer Research and Development Center—Cold Regions Research and Engineering Laboratory (CRRDC), also made major contributions in this area. 

1 Where Did the Molecules Come from and How Did They Get Here  

Trace Chemical Sensing of Explosives, Edited by Ronald L. Woodfin Copyright 2007 John Wiley Sons, Inc. 

Of course, the object that contains and releases the explosive can be almost anything. However, since we began this study from the perspective of searching for mines, initially, landmines buried in soil, much of this chapter will use that specific work to illustrate the approach. We have gained a level of understanding for this particular application. From there we can adapt the methods to understand the EF T of molecules in other situations. We can think of numerous examples of other applications where we might need to locate the object that is releasing explosive molecules. 

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Chapter 4, Where Should We Look for Explosive Molecules In this chapter we examine the processes that affect the release of explosive molecules from a munition and their movement to some location where a sensing system may encounter them. The effects of environment and transport through soil, air, and water are explored. 

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