Laser-induced breakdown spectroscopy for the remote detection of explosives at level of fingerprints

2016 ◽  
Author(s):  
S. Almaviva ◽  
A. Palucci ◽  
V. Lazic ◽  
I. Menicucci ◽  
M. Nuvoli ◽  
...  
Keyword(s):  
Remote Detection ◽  
Laser Induced Breakdown Spectroscopy ◽  
Breakdown Spectroscopy ◽  
Laser Induced Breakdown ◽  
Detection Of Explosives

In situ classification of rocks using stand-off laser-induced breakdown spectroscopy with a compact spectrometer

2018 ◽  
Vol 33 (3) ◽  
pp. 461-467 ◽  
Author(s):  
W. T. Li ◽  
Y. N. Zhu ◽  
X. Li ◽  
Z. Q. Hao ◽  
L. B. Guo ◽  
...  
Keyword(s):  
High Accuracy ◽  
Remote Detection ◽  
Laser Induced Breakdown Spectroscopy ◽  
Breakdown Spectroscopy ◽  
Laser Induced Breakdown

The ASPI-LDA algorithm combined with a compact spectrometer to achieve high accuracy classification, which has a great potential for field in situ remote detection.

Control of filamentation for enhancing remote detection with laser induced breakdown spectroscopy

2006 ◽  
Author(s):  
Matthew Fisher ◽  
Craig Siders ◽  
Eric Johnson ◽  
Oleksiy Andrusyak ◽  
Christopher Brown ◽  
...  
Keyword(s):  
Remote Detection ◽  
Laser Induced Breakdown Spectroscopy ◽  
Breakdown Spectroscopy ◽  
Laser Induced Breakdown

Detection of explosives with laser-induced breakdown spectroscopy

2012 ◽  
Vol 7 (6) ◽  
pp. 701-707 ◽  
Author(s):  
Qian-Qian Wang ◽  
Kai Liu ◽  
Hua Zhao ◽  
Cong-Hui Ge ◽  
Zhi-Wen Huang
Keyword(s):  
Laser Induced Breakdown Spectroscopy ◽  
Breakdown Spectroscopy ◽  
Laser Induced Breakdown ◽  
Detection Of Explosives

scholarly journals Laser-induced plasma spectroscopy for mine detection and verification

2006 ◽  
Vol 24 (2) ◽  
pp. 241-247 ◽  
Author(s):  
WOLFGANG SCHADE ◽  
CHRISTIAN BOHLING ◽  
KONRAD HOHMANN ◽  
DIRK SCHEEL
Keyword(s):  
Laser Pulses ◽  
Fiber Amplifier ◽  
Remote Detection ◽  
Plasma Spectroscopy ◽  
Mine Detection ◽  
Breakdown Spectroscopy ◽  
Laser Induced Breakdown ◽  
Housing Materials ◽  
Detection Of Explosives

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.

The parameter optimization of lasers’ energy ratio of the double-pulse laser induced breakdown spectrometry for heavy metal elements in the soil

2021 ◽  
Author(s):  
Guanyu Chen ◽  
Yunrui Yang ◽  
Ye Zhan ◽  
Xueying Jin ◽  
Guang Yang ◽  
...  
Keyword(s):  
Heavy Metal ◽  
Detection Method ◽  
Remote Detection ◽  
Laser Induced Breakdown Spectroscopy ◽  
Soil P ◽  
Heavy Metal Detection ◽  
Breakdown Spectroscopy ◽  
Laser Induced Breakdown ◽  
Heavy Metal Elements ◽  
Double Pulse Laser

Laser-induced breakdown spectroscopy (LIBS) is a rapid, no-sample preparation, remote detection method that has been applied widely in the area of heavy metal detection in the soil. However, the promotion...

scholarly journals Standoff Detection of Explosives at 1 m using Laser Induced Breakdown Spectroscopy

2017 ◽  
Vol 67 (6) ◽  
pp. 623 ◽  
Author(s):  
Manoj Kumar Gundawar ◽  
Rajendhar Junjuri ◽  
Ashwin Kumar Myakalwar
Keyword(s):  
Electron Density ◽  
Plasma Temperature ◽  
Laser Induced Breakdown Spectroscopy ◽  
Stark Broadening ◽  
Breakdown Spectroscopy ◽  
Standoff Detection ◽  
Laser Induced Breakdown ◽  
Plasma Characteristics ◽  
Detection Of Explosives ◽  
First Time

<p class="p1">We report the ‘standoff detection’ of explosives at 1 m in laboratory conditions, for the first time in India, using Laser Induced Breakdown Spectroscopy combined with multivariate analysis. The spectra of a set of five secondary explosives were recorded at a distance of 1 m from the focusing as well as collection optics. The plasma characteristics viz., plasma temperature and electron density were estimated from Boltzmann statistics and Stark broadening respectively. Plasma temperature was estimated to be of the order of (10.9 ± 2.1) .103 K and electron density of (3.9 ± 0.5) .1016 cm-3. Using a ratiometric approach, C/H and H/O ratios showed a good correlation with the actual stoichiometric ratios and a partial identification success could be achieved. Finally employing principle component analysis, an excellent classification could be attained.<span class="Apple-converted-space"> </span></p>

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