Deep Ultraviolet Resonance Raman Excitation Enables Explosives Detection.
- Tuschel, David D
- Mikhonin, Aleksandr V
- Lemoff, Brian E
- Asher, Sanford A.
DOIAbstract
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.\ud \u
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