Full text loading...
IR transmission spectra of air, TNT, and RDX. Shared absorption bands are highlighted.
(a) The model used in Eq. (1) . (b) The experimental setup. (c) Transient thermal profile of carbon powder (mesh ) on a copper substrate illuminated with a laser at 1 m stand off. Signal recorded with a LN cooled MCT detector.
Illustration of resonant photothermal heating. Letters “RDX” and “TNT” were written on a polypropylene film using solution of the explosives. (a) Result of nonselective heating using a heat gun. (b) IR spectrum of RDX and TNT showing resonances. (c) Laser heating with off-resonance wavelength. (d) Laser heating on resonance with TNT only. (e) Laser heating on resonance with RDX and TNT. (f) Laser heating on resonance with RDX only.
(a) Raw thermal image of TNT particles on a stainless steel substrate. (b) Differential image (laser on minus laser off). Individual particles of sizes diameter can be observed (1 m stand off, 20 mW, , 10 mm spot).
Article metrics loading...