Jul 2026· Iraqi Journal of Science· pp. 3920-3931· 0 citations· 21 references
Abstract
This study analyses the physical and optical properties of jet plasma at atmospheric pressure (APPJ) using optical emission spectroscopy (OES), focusing on the effect of argon gas flow rate. The results show that increasing the gas flow rate from 2 to 4 litres/minute results in an increase in the spectral emission intensity due to increased ionisation within the plasma. Using the Boltzmann method, it was noted that the electron temperature decreased from 0.609 to 0.526 electron volts, while the electron density increased as the gas flow rate was increased. This reflects an altered relationship between ionisation and energy loss. With higher gas flow, the plasma becomes more concentrated, but its temperature decreases. In this case, it becomes more manageable, ideal for advanced use.
The formation of plasma on the surface of BaTiO3 ferroelectric ceramics in an argon atmosphere in the pressure range 1 × 10–5–1 × 10–2 Torr has been experimentally studied. Based on the discharge voltage and current, the energy supplied by the driving pulse generator for plasma formation was investigated. It is shown t...
A. V. Stepanov, F. Konusov, S. K. Pavlov et al.· Plasma Physics Reports· 0 citations
In this work, a plasma jet system generated in a deionized aqueous medium was studied. A locally manufactured copper-zinc alloy with a ratio of 80:20 was used for this purpose, and a bidirectional power supply with a total output of 20 kV and a cutoff frequency of 30 kHz was used. The gas flow rate was varied at 3...
M. H. Jawad, M. R. Abdulameer· Iraqi Journal of Science· 0 citations
This research investigated the effect of both the applied voltage and the anode area on the electrical and plasma properties of a DC glow discharge in low-pressure argon gas. The electrical properties included current-voltage (I-V) curves and Paschen's curves, while the plasma parameters included electron temperature a...
Zahraa55 Noman, Abdulhussain A. Khadayeir· Al-Noor Journal of Engineeri...· 0 citations
This study investigates the effects of solid-state laser power and argon gas pressure on selected fundamental parameters of a DC glow discharge. The discharge was generated by applying a DC voltage of up to 6 kV, while a 532 nm solid-state laser with power ranging from 0 to 5 watts was directed through the plasma. The...
Pshtiwan M. Karim, Diyar A. Sadiq, D. Bleej et al.· Iraqi Journal of Physics· 0 citations
The impact of substrate cooling on electron energy probability function is investigated in an inductively coupled plasma. For Ar plasma, the electron density triples at 60 mTorr as the substrate temperature decreases. The dependence is observed over a wide temperature range from 200 K (cryogenic) to 330 K (above room t...
Jongseok Ahn, Min-Seok Kim, D. Kim et al.· Plasma Sources Science & Tec...· 0 citations
