Laser-induced plasma spectroscopy for mine detection and verification

Autor:	Wolfgang Schade, Dirk Scheel, Konrad Hohmann, Christian Bohling
Rok vydání:	2006
Předmět:	Materials science Explosive material business.industry Amplifier Pulse duration Plasma Pulsed power Condensed Matter Physics Laser Atomic and Molecular Physics and Optics law.invention law Fiber laser Optoelectronics Electrical and Electronic Engineering Spectroscopy business
Zdroj:	Laser and Particle Beams. 24:241-247
ISSN:	1469-803X 0263-0346
DOI:	10.1017/s0263034606060356
Popis:	Laser-induced breakdown spectroscopy (LIBS) in combination with a conventional mine prodder is applied for remote detection of explosives and mine housing materials. High power subnanosecond laser pulses (pulse powerEp= 0.6 mJ and pulse duration Δt= 650 ps) at 1064 nm with a typical repetition rate of 10 kHz are generated by using a passively Q-switched Cr4+:Nd3+:YAG microchip-laser as seed-laser for an Yb-fiber amplifier. In the present investigation, the ratios of “late” and “early” LIBS intensities for the cyanide (CN) plasma emission at 388 nm and for the C-emission at 248 nm are used for data analysis. This allows the classification of different explosives and mine casing materials under real time conditions and also similar applications to materials processing.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::190d9abedf79b5f4c40a7c10f2593ae4 https://doi.org/10.1017/s0263034606060356 Zobrazit plný text záznamu