Noninvasive Detection of Weapons of Mass Destruction Using Terahertz Radiation
M B. Campbell, Edwin J. Heilweil
The growing and immediate threat of biological and chemical weapons has placed urgency on the development of chemical and biological warfare agent (CWA/BWA) and explosive material screening devices. Specifically, the ability to detect CWA/BWA or explosives prior to deployment is paramount to mitigating the threat without exposing individuals to its effects. SPARTA, Inc., and NIST are currently investigating the feasibility of using terahertz radiation to non-invasively and non-destructively detect and identify threats inside the mail or in sealed containers, such as bottles or hand-carried items. Small-to-medium sized molecules (3 atoms to 100 atoms) in gas, liquid and solid phases consistently exhibit identifiable spectral features in the far-IR portion of the spectrum. Many compounds associated with weapons of mass destruction/effect are made up of molecules of this size. Because 0.3-20 THz light partially transmits through many common materials, transmission measurements of THz light can potentially be used to detect the presence of CWA/BWA and explosives in the pathway of a THz radiation beam.
Terahertz for Military and Security Applications, Conference | | Terahertz for Military and Security Applications | SPIE
April 21-25, 2003
Proceedings of SPIE--the International Society for Optical Engineering
containers, non-invasive, terahertz spectroscopy, THz, THz detection, weapons of mass destruction
and Heilweil, E.
Noninvasive Detection of Weapons of Mass Destruction Using Terahertz Radiation, Terahertz for Military and Security Applications, Conference | | Terahertz for Military and Security Applications | SPIE, Undefined, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=841730
(Accessed May 27, 2023)