Study of archaeological coins of different dynasties using libs coupled with multivariate analysis
| Autor: | A.K. Rai, S. Awasthi, G. K. Rai, Rohit Kumar |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
Materials science
Spectrometer Mechanical Engineering 010401 analytical chemistry Atomic emission spectroscopy 02 engineering and technology 021001 nanoscience & nanotechnology Laser 01 natural sciences Archaeology Atomic and Molecular Physics and Optics Spectral line 0104 chemical sciences Electronic Optical and Magnetic Materials law.invention law Principal component analysis Laser-induced breakdown spectroscopy Electrical and Electronic Engineering 0210 nano-technology Monitoring tool Uttar pradesh |
| Zdroj: | Optics and Lasers in Engineering. 79:29-38 |
| ISSN: | 0143-8166 |
| DOI: | 10.1016/j.optlaseng.2015.11.005 |
| Popis: | Laser Induced Breakdown Spectroscopy (LIBS) is an atomic emission spectroscopic technique having unique capability of an in-situ monitoring tool for detection and quantification of elements present in different artifacts. Archaeological coins collected form G.R. Sharma Memorial Museum; University of Allahabad, India has been analyzed using LIBS technique. These coins were obtained from excavation of Kausambi, Uttar Pradesh, India. LIBS system assembled in the laboratory (laser Nd:YAG 532 nm, 4 ns pulse width FWHM with Ocean Optics LIBS 2000+ spectrometer) is employed for spectral acquisition. The spectral lines of Ag, Cu, Ca, Sn, Si, Fe and Mg are identified in the LIBS spectra of different coins. LIBS along with Multivariate Analysis play an effective role for classification and contribution of spectral lines in different coins. The discrimination between five coins with Archaeological interest has been carried out using Principal Component Analysis (PCA). The results show the potential relevancy of the methodology used in the elemental identification and classification of artifacts with high accuracy and robustness. |
| Databáze: | OpenAIRE |
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