Laser Induced Breakdown Spectroscopy for Classification of High Energy Materials using Elemental Intensity Ratios

S. Sreedhar; Manoj Kumar Gundawar; S. Venugopal Rao

doi:10.14429/dsj.64.4741

S. Sreedhar Advanced Centre of Research in High Energy Materials, University of Hyderabad, Hyderabad-500 046,
Manoj Kumar Gundawar Advanced Centre of Research in High Energy Materials, University of Hyderabad, Hyderabad-500 046,
S. Venugopal Rao Advanced Centre of Research in High Energy Materials, University of Hyderabad, Hyderabad-500 046,

DOI: https://doi.org/10.14429/dsj.64.4741

Keywords: Laser induced breakdown spectroscopy, high energy materials

Abstract

A simple, yet efficient, methodology is proposed to classify three high energy materials (HEMs) with diverse composition using nanosecond laser induced breakdown spectroscopic data. We have calculated O/N, N/H, and O/H elemental peaks ratios using a ratiometric method. The present work describes a novel way to construct 1D, 2D, and 3D classification model using the above mentioned ratios. Multivariate statistical methods are followed for construction of the classification models. A detailed procedure for classification of three different HEMs is presented here.

Defence Science Journal, Vol. 64, No. 4, July 2014, pp.332-338, DOI:http://dx.doi.org/10.14429/dsj.64.4741

Author Biographies

S. Sreedhar, Advanced Centre of Research in High Energy Materials, University of Hyderabad, Hyderabad-500 046,

Mr S. Sreedhar received his MSc (Physics) from Vellore Institute of Technology, Vellore, in 2006. Presently pursuing his PhD (Physics) at Advanced Centre of Research on High Energy Materials (ACRHEM), University of Hyderabad, Hyderabad. His research interest includes: Femtosecond and nanosecond laser induced breakdown spectroscopy, nanoparticle generation using laser ablation in liquids, diagnostics of laser induced plasma.

Manoj Kumar Gundawar, Advanced Centre of Research in High Energy Materials, University of Hyderabad, Hyderabad-500 046,

Dr Manoj Kumar Gundawar obtained his PhD from University of Hyderabad in 2005. Presently working as Assistant Professor at ACRHEM, University of Hyderabad since 2007. His primary research interest is Laser induced breakdown spectroscopy. He worked as project engineer at Electro Optical Instruments Research Academy, Hyderabad where he was involved in the development of Er doped fiber laser and waveguide fabrication on LiNbO3.

S. Venugopal Rao, Advanced Centre of Research in High Energy Materials, University of Hyderabad, Hyderabad-500 046,

Dr S. Venugopal Rao obtained his MSc and PhD from University of Hyderabad, India. Presently associated with ACRHEM, University of Hyderabad working towards understanding the interaction of nanosecond, picosecond, and femtosecond laser pulses with high energy materials using various time-resolved spectroscopic techniques such as, ultrafast pump-probe, ultrafast ablation, femtosecond laser induced breakdown spectroscopy and ultrafast laser direct writing. He has more than 150 papers in international journals and refereed conference proceedings. He is recipient of the NASI-SCOPUS young scientist award for the year 2012 in physics.