Open AccessPlasma Parameters Generated from Iron Spectral Lines By Using LIBS Technique
Author(s) -
Baida M. Ahmed
Publication year - 2020
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/928/7/072096
Subject(s) - plasma , atomic physics , laser , spectral line , stark effect , materials science , electron density , wavelength , range (aeronautics) , plasma parameters , debye , electron temperature , plasma parameter , chemistry , optics , physics , optoelectronics , organic chemistry , quantum mechanics , astronomy , composite material
An interesting LIBS technique was used to investigate the optical emission spectral plasma of iron metal properties. To generate plasma from the surface Fe, Q-switched Nd-YAG laser with wavelength 532 nm and a focal length 10 cm was used with different energies (500-800) mJ. Then plasma parameters were calculated; electron density ne ranged between (0.92-1.4) × 10 18 cm −3 , the electron temperature Te was in the range of (2.19-2.59) eV. These calculations were done using Boltzmann’s plot and the Stark broadening respectively depending on the experimental spectrum, and followed up to estimate the others plasma parameters, Debye length (λ D ), frequency ( f p ) and the Debye sphere (N D ). Results indicate that plasma parameters are proportional to the energy of laser due to the increase in the intensity of spectral lines energy, and that plasma shielding of iron increases with laser energy in the range of (3.2-4.3).