Applications of Laser‐Induced Breakdown Spectroscopy for Trace Detection in Explosives

Abstract

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Laser-induced breakdown spectroscopy (LIBS) is an emerging atomic spectroscopy detection technology in recent years. It provides a convenient and accurate new method for qualitative and quantitative analysis in explosive trace detection. Explosives detection includes two types of indoor and outdoor scenes. In the current applications in the field of anti-terrorism and security, crowded indoors are important detection scenarios, and indoor attachments and indoor gas are important samples. The current main LIBS systems for indoor dangerous goods detection can be divided into two types: indoor surface attachment detection system; and indoor deep embedded object detection system. In the exploration of application, many studies have revealed the formation mechanism of LIBS atomic lines and molecular band, and explored the influence of substrate, environment, and other factors on LIBS spectrum, which provides a theory for the large-scale application of LIBS technology in the field of security support.