Deep Ultraviolet Resonance Raman Excitation Enables Explosives Detection

Author:

Tuschel David D.1,Mikhonin Aleksandr V.1,Lemoff Brian E.1,Asher Sanford A.1

Affiliation:

1. University of Pittsburgh, Department of Chemistry, Pittsburgh, Pennsylvania 15260 (D.D.T., A.V.M., S.A.A.); and West Virginia High Technology Consortium Foundation, 1000 Technology Drive, Fairmont, West Virginia 26554 (B.E.L.)

Abstract

We measured the 229 nm absolute ultraviolet (UV) Raman cross-sections of the explosives trinitrotoluene (TNT), pentaerythritol tetranitrate (PETN), cyclotrimethylene-trinitramine (RDX), the chemically related nitroamine explosive HMX, and ammonium nitrate in solution. The 229 nm Raman cross-sections are 1000-fold greater than those excited in the near-infrared and visible spectral regions. Deep UV resonance Raman spectroscopy enables detection of explosives at parts-per-billion (ppb) concentrations and may prove useful for stand-off spectroscopic detection of explosives.

Publisher

SAGE Publications

Subject

Spectroscopy,Instrumentation

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