Detection of materials based on raman scattering and...

Details Detection of materials based on raman scattering and... Detection of materials based on raman scattering and...

G - Physics

01

N

G01N 21/65 (2006.01) G01N 21/64 (2006.01)

Patent

CA 2665935

A system and method are provided for detecting presence of a material of interest on a surface or in a space using spectroscopic techniques. A beam of ultraviolet light is directed to the surface or space to achieve photodissociation of a material of interest in order to produce photofragment molecules that fluoresce when excited by ultraviolet light. Raman scattering of the parent target material and laser-induced fluorescence of the daughter photofragments are collected from the surface or space that may be induced by the beam of ultraviolet light. Raman spectra and fluorescence spectra are generated from the captured Raman scattering and fluorescence. The fluorescence spectra associated with the daughter photofragment molecules and the Raman spectra of the parent target material are analyzed to determine presence of the material of interest on the surface or in the space.

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