A F M Yusuf Haider: Recent submissions
Now showing items 21-28 of 28
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Elemental analyses and determination of lead content in kohl (stone) by laser-induced breakdown spectroscopy
(© 2012 Society for Applied Spectroscopy, 2012-04)Elemental analyses of kohl (stone) samples collected from three different parts of the world were performed using laser-induced breakdown spectroscopy (LIBS). The analyses indicated that lead (Pb), copper (Cu), silver (Ag), ... -
Gold nanoparticles: fabrication by laser ablation technique and their optical and morphological studies
(© 2013 Nova Science Publishers, 2013-01)Material particles of the size of few nano-meters to couple of hundreds of nano-meters exhibit size and shape dependent properties and the consequent versatility and importance in their use have made them an exciting and ... -
Determination of the ash content of coal without ashing: a simple technique using laser-induced breakdown spectroscopy
(© 2013 American Chemical Society, 2013-07-18)The bituminous coal samples were analyzed using the technique of laser-induced breakdown spectroscopy (LIBS). The fraction of the ash content of the coal was spectroscopically determined by a technique requiring only two ... -
Detection of trace amount of arsenic in groundwater by laser-induced breakdown spectroscopy and adsorption
(© 2014 Optics and Laser Technology, 2014)LIBS technique coupled with adsorption has been applied for the efficient detection of arsenic in liquid. Several adsorbents like tea leaves, bamboo slice, charcoal and zinc oxide have been used to enable sensitive detection ... -
Radiative lifetime measurement of excited neutral nitrogen atoms by time resolved laser-induced breakdown spectroscopy
(© 2014 Royal Society of Chemistry, 2014-08)Lifetimes of the excited 2P2 (3P) 3p 4S3/2 level of a nitrogen atom corresponding to transitions to different lower states have been estimated by measuring the line intensity of a transition as a function of the delay time ... -
Laser Raman spectroscopy with different excitation sources and extension to surface enhanced raman spectroscopy
(© 2015 Hindawi Publishing Corporation, 2015)A dispersive Raman spectrometer was used with three different excitation sources (Argon-ion, He-Ne, and Diode lasers operating at 514.5 nm, 633 nm, and 782 nm, resp.). The system was employed to a variety of Raman active ... -
Electron paramagnetic resonance spectra of Fe2+ and Fe3+ ions in SrO: evidence for off-centre displacement of Fe2+ ions
(© 1978 Journal of Physics C: Solid State Physics, 1978)The electron paramagnetic resonance (EPR) spectra of Fe2+ and Fe3+ ions in single crystals of SrO are reported. Fe3+ ions occupy sites of orthorhombic symmetry and their EPR spectra have been fitted with an S=5/2 ... -
A quick method to determine the impurity content in gold ornaments by LIBS technique
(© 2015 SciTePress, 2015)Laser induced breakdown spectroscopy (LIBS) and low energy dispersive X-ray fluorescence (ED-XRF) spectrometer, were used to determine the line intensity and concentration ratios of the major impurities (Cu and Ag) with ...