Elemental Analysis of Kohl Using Laser Ablation and Atomic Absorption Spectroscopy (AAS) techniques
| Autor: | Waseem Ahmed Bhutto, Aatif Abbas, M. Aslam Khoso, M. Siddique Kalhoro, R. H. Mari, M. Haider Zaman, Saifullah Jamali, Nek M. Shaikh, Yasir Jamil |
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| Rok vydání: | 2021 |
| Předmět: |
Materials science
Number density Laser ablation Analytical chemistry Condensed Matter Physics Laser Electronic Optical and Magnetic Materials law.invention symbols.namesake Stark effect law Elemental analysis symbols Electron temperature Laser-induced breakdown spectroscopy Electrical and Electronic Engineering Atomic absorption spectroscopy |
| Zdroj: | Physica B: Condensed Matter. 620:413278 |
| ISSN: | 0921-4526 |
| Popis: | We report the spectroscopic studies of the Kohl plasma produced in air at atmospheric pressure by Laser Induced Breakdown Spectroscopy (LIBS) and Atomic Absorption Spectroscopy (AAS) techniques. The plasma has been produce using Q-switched Nd:YAG laser at Second Harmonic Generation SHG (532 nm), with laser irradiance of 4 × 1010 W/cm2, 10 Hz repetition rate and 5ns pulse duration. From the spectroscopic analysis of the registered spectrum, we have detected the presence of Pb, C, Ca, Cr, Fe, Ba, Zn, Hg, Na and H. The electron temperature has been determined from the intensity ratio of the two transition lines of Pb– I, 368.34 nm and 373.99 nm, whereas the electron number density has been estimated from the Stark broadening profile of the H α line at 656.28 nm. It has been noticed that the maximum value of the electron temperature and electron number density at the initial stage of the plasma. The electron temperature varies as (15500–11600) K and the number density varies as (2.06 × 1017–3.62 × 1016) cm−3 with the delay time of (1-6) μs. |
| Databáze: | OpenAIRE |
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