Spectroscopic Analysis of DC-Nitrogen Plasma Produced using Copper Electrodes

Abstract

This study shows the effects of copper material electrode, applied voltage, and different pressure values on electrical discharge plasma. The purpose of the work is the application of the spectral analysis method to obtain accurate results of nitrogen plasma parameters. By using the optical emission spectroscopy (OES), many N2 molecular spectra peaks appeared in the range from 300 to 480 nm. Also, some additional peaks were recorded, corresponding to atomic and ionic lines for nitrogen, target material, and hydrogen, in all samples. The electron density (ne) was calculated from the measurement of Stark broadening effect, which was found to decrease with increasing pressure from 0.1 mbar to 0.8 mbar. The higher emission intensities occurred at 0.2 mbar working pressure and were reduced with higher pressure. The vibrational temperature (Tvib) for N2 increased from 0.17 to 0.33 eV with increasing the pressure from 0.15 mbar to 0.2 mbar, then decreased to 0.25 eV with increasing the pressure to 0.8 mbar. Other plasma parameters were studied, which are electron temperature (Te), plasma frequency of electron ( ), and Debye length (λD).

Study the Impact of Laser Energy on Laser-Induced Copper Plasma Parameters By Spectroscopic Analysis Technique

“…Figure 4 depicts the emission spectrum of copper metal plasma that was diagnosed by (S3000-UV-NIR) spectrometer at di erent laser energy, ranging from 500 to 800 mJ, where the gure shows that the spectrum was recorded from wavelengths ranging from 200 nm to 650 nm, where the results showed the emergence of many spectral copper peaks of these emissions, including several spectral lines for the atomic copper 324.58, 346.62, 360.20 to the strongest intensity 521.32 nm, in addition, there were ve ionic emission lines in the spectrum emissions lines Cu(II) starting from weak line 212.54 nm and 219.60, 237.82, 261.97 to the strongest line at 529.42 nm of the laser energy utilized (500-800) mJ. In situations where the intensity of these emission spectral peaks rises as a result of an increase in laser energy as a result of an increase in plasma absorption, copper emission spectral lines are the most useful for estimating plasma temperature, and thus plasma temperature estimations are greatly a ected by resonant emission spectral lines, and agreement with prior ndings (Ahmed and Yousef, 2021;Fikry et al, 2020a;Safeen et al, 2019). the most important characteristics in plasma physics, with also plasma parameters (Haberberger et al, 2019) .…”

Influence of Distance and Argon Flow rate on Pseudomonas aeruginosa Bacteria Exposed to Non thermal Plasma at Atmospheric Pressure

“…In this scenario, the death of cancer cells can be increased by using exogenous ROS-generating agents, because they cause enhanced ROS stress. Oxidative stress can induce many biological responses, The extent of these responses can depend on the cellular genetic background, the different classes of specific ROS involved, and significantly on the intensity and duration of the oxidative stress created [14,15,16]. However, the results differed when the distance between the isolated bacteria sample and the plasma needle was increased to 3 cm at the same voltages (4.9kV, 8 kV).…”

Determination of the Mathematical Model for Plasma Electronic Coefficients of the Earth's Ionosphere

“…The altitude dependent chemical composition of the Earth's ionosphere [4]. At altitudes above 1000 km, as shown in Figure 1, H + dominates the ion composition.…”

“…Plasma is a neutral gas composed of neutral and charged particles, such as the upper atmosphere, interstellar matter, and the Earth's ionosphere [1,2]. There are many applications of plasma like solar cells, photodetectors, optoelectronic devices and biomedical device [3][4][5].…”

“…Plasma is a neutral gas composed of neutral and charged particles, such as the upper atmosphere, interstellar matter, and the Earth's ionosphere [1,2]. There are many applications of plasma like solar cells, photodetectors, optoelectronic devices and biomedical device [3][4][5]. The electron transport coefficients were calculated and rate coefficients were used in fluid models of gas discharges from collision cross-section data by achieving equation of Boltzmann with BOLSIG+ (program) [6].…”