Discrimination methodologies using femtosecond LIBS and correlation techniques

Sreedhar Sunku; E. Nageswara Rao; G. Manoj Kumar; Surya P. Tewari; S. Venugopal Rao

doi:10.1117/12.2015749

29 May 2013 Discrimination methodologies using femtosecond LIBS and correlation techniques

Sreedhar Sunku, E. Nageswara Rao, G. Manoj Kumar, Surya P. Tewari, S. Venugopal Rao

Proceedings Volume 8726, Next-Generation Spectroscopic Technologies VI; 87260H (2013) https://doi.org/10.1117/12.2015749
Event: SPIE Defense, Security, and Sensing, 2013, Baltimore, Maryland, United States

Abstract

Laser induced breakdown spectroscopy is an attractive and versatile spectroscopic technique employed successfully for the detection of hazardous substances. The specific advantages of using femtosecond (fs) pulses with LIBS technique include lower ablation threshold, reduced background Continuum emission. In addition to atomic peaks in plasma the molecular peaks (CN and C₂) also play a significant role in classification of these samples. In the present work fs LIBS spectra were recorded from five different samples (RDX, HMX, NTO, ANTA, and DADNE) made in the form of pure pellets. Correlation statistics were used to discriminate the samples based on molecular, atomic ratios. This paper discusses, in detail, a simple correlation technique applied for the fs LIBS data for achieving classification.

Citation Download Citation

Sreedhar Sunku, E. Nageswara Rao, G. Manoj Kumar, Surya P. Tewari, and S. Venugopal Rao "Discrimination methodologies using femtosecond LIBS and correlation techniques", Proc. SPIE 8726, Next-Generation Spectroscopic Technologies VI, 87260H (29 May 2013); https://doi.org/10.1117/12.2015749

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