Abstract
In this paper, the optical emission spectrum (OES) technique was used to analyze the spectrum resulting from the (CdO:CoO) plasma in air, produced by Nd:YAG laser with λ=1064 nm, τ=10 ns, a focal length of 10 cm, and a range of energy of 200-500 mJ. We identified laser-induced plasma parameters such as electron temperature (Te) using Boltzmann plot method, density of electron (ne), length of Debye (λD), frequency of plasma (fp), and number of Debye (ND), using two-Line-Ratio method. At a mixing ratio of X= 0.5, the (CdO:CoO) plasma spectrum was recorded for different energies. The results of plasma parameters caused by laser showed that, with the increase in laser energy, the values of Te, ne and fp were increased, while the value of λD was decreased. The calculated electron temperature value was in the range of 0.449-0.619 eV at ratio X=0.5
Highlights
Laser-Induced Plasma Spectroscopy (LIPS) is considered to be a proven analytical method used for the rapid determination of sample elemental composition
Optical Emission Spectroscopy (OES) has obtained a great deal of consideration for the depiction that is dependent on LIPS [4]
The plasma resulting from the laser beams' interaction with the target material's surface includes electrons and ions in an excited state, in addition to neutral atoms and radiation
Summary
Laser-Induced Plasma Spectroscopy (LIPS) is considered to be a proven analytical method used for the rapid determination of sample elemental composition. Where is the full width of the spectral line at half maximum, ω is the theoretical line of full-width of the Stark parameter for broadening, calculated at the same reference electron density, While the frequency of plasma is defined such that any disturbance from quasi-neutral equilibrium in the plasma will create electric fields. In Debye’s sphere, the number of particles (ND) is dependent on the electron density and electron temperature and it represents a second condition for plasma existence (ND>>>1), as follows [11]: The main objective of this paper is to use spectral emission of light to study plasma parameters using spectral lines emitted from (CdO: CoO) pure atoms surrounding the plasma
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