Mid-Infrared Laser Spectroscopy Applications I: Detection of Traces of High Explosives on Reflective and Matte Substrates

Infrared Spectroscopy - Principles, Advances, and Applications Pub Date : 2018-12-07 DOI:10.5772/INTECHOPEN.81923

L. Pacheco‐Londoño, J. Castro-Suarez, Nataly J. Galán‐Freyle, Amanda M. Figueroa-Navedo, J. L. Ruiz-Caballero, Ricardo Infante-Castillo, S. Hernández‐Rivera

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引用次数: 4

Abstract

Mid-infrared (MIR) lasers have revolutionized infrared vibrational spectroscopy, converting an already dominant spectroscopic analysis technique into an even more powerful, easier to use, and quicker turn-around cadre of versatile spectroscopic tools. A selection of applications, revisited under the umbrella of MIR laser-based properties, very high brightness, collimated beams, polarized sources, highly monochromatic tunable sources, and coherent sources, is included. Applications discussed concern enhanced detection, discrimination, and quantification of high explosives (HEs). From reflectance measurements of chemical residues on highly reflective metallic substrates to reflectance measurements of HEs deposited on non-reflective, matte substrates is discussed. Coupling with multivariate analyses (MVA) techniques of Chemometrics allowed near trace detection of HEs, with sharp discrimination from highly MIR absorbing substrates.

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中红外激光光谱学应用ⅰ:探测反射和哑光基材上的烈性炸药痕迹

中红外(MIR)激光器彻底改变了红外振动光谱学，将已经占主导地位的光谱分析技术转化为更强大，更易于使用和更快周转的多功能光谱工具骨干。选择的应用，重新审视了基于MIR激光性质的伞下，非常高的亮度，准直光束，偏振源，高度单色可调源，和相干源，包括。讨论的应用涉及增强检测，识别和定量的高能炸药(HEs)。从化学残留物在高反射金属基底上的反射率测量到沉积在非反射，哑光基底上的he的反射率测量进行了讨论。与化学计量学的多变量分析(MVA)技术相结合，可以近痕量检测he，对高MIR吸收底物有明显的区分。

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Infrared Spectroscopy - Principles, Advances, and Applications

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