Determination of electron density in a wall stabilized Ar-CO ${\mathsf{_2}}$ thermal plasma

Brugeat, S.; Coitout, H.

doi:10.1140/epjd/e2003-00290-6

Cited by 7 publications

(4 citation statements)

References 28 publications

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“…This control of pulse duration and number of pulses was necessary to keep the pressure in the chamber within certain range that was 0.5-1.0 mbar which is of great importance to Plasma parameters, electron temperature and density were measured using optical emission spectroscopy. Electron temperature was determined by two lines ratio method (8), the twoAr spectral lines chosen were 750.34 and 811.5 nm, while the electron density was determined by Stark broadening effect method (9). These measured values were T e =0.5 eV and n e =1.75x 10 17 cm -3 .…”

Section: Experimental Set-upmentioning

confidence: 99%

Polyaniline/TiO2 nanocomposite thin films prepared by microwave plasma

Hammad Raheem Humud,

Ahmad Salman Wasfi,

Mohaned Ali Abed

et al. 2022

JWSM

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Polyaniline (PANI) and PANI/TiO2 nanocomposite thin films were prepared by microwave plasma. The TiO2 powder of average particle size of 50 nm was used to prepare PANI/TiO2 nanocomposite thin films. The PANI/TiO2 nanocomposite thin films prepared by polymerization in plasma and characterized by UV-VIS, FTIR, AFM and SEM to study the effect of titanium oxide nanoparticles on the optical properties, morphology and structure of the thin films. The optical properties studies showed that the optical energy band gap of the PANI/TiO2 decreased systematically from 3.58 eV to 3.38 eV with increasing TiO2 nanoparticles concentration from 1 to 5 wt%. The FTIR measurement showed a shifting in the FTIR absorption peaks with TiO2 concentration. AFM and SEM images indicated a uniform distribution of the TiO2 nanoparticles in the PANI matrix. It can be concluded that PANI/TiO2 nanocomposite thin films with controlled optical energy band gap can be prepared by microwave plasma technique.

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Section: Experimental Set-upmentioning

confidence: 99%

Polyaniline/TiO2 nanocomposite thin films prepared by microwave plasma

Hammad Raheem Humud,

Ahmad Salman Wasfi,

Mohaned Ali Abed

et al. 2022

JWSM

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show abstract

“…Plasma parameters, electron temperature and density was measured using optical emission spectroscopy. Electron temperature was determined by two lines ratio method [8], the two spectral lines were (750.34, 811.5 nm), while the electron density was determined by Stark broading effect [9]. These measured values were T e =0.51 eV and n e =1.71x 10 17 cm -3 The film thickness was measured using the optical interferometer method employing laser (532 nm), the films thickness t was determined using the formula [10] Results and discussion FTIR analysis FTIR spectra of PANI and Ag/PANI nanocomposite is shown in Fig.…”

Section: Experimental Set-upmentioning

confidence: 99%

Characterization of silver polyaniline nanocomposite thin films prepared by microwave induced plasma

Wassfi¹

2019

IJP

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Polyaniline (PANI) and Ag/PANI nanocomposite thin films have prepared by microwave induced plasma. The Ag powder of average particle size of 50 nm, were used to prepare Ag/PANI nanocomposite thin films. The Ag/PANI nanocomposite thin films prepared by polymerization in plasma and characterized by UV-VIS, FTIR, AFM and SEM to study the effect of silver nanoparticles on the optical properties, morphology and structure of the thin films. The optical properties studies showed that the energy band gap of the Ag/PANI (5%wt silver) decreased from 3.6 to 3.2 eV, where the substrate location varied from 4.4 to 3.4 cm from the axis of the cylindrical plasma chamber. Also the optical energy gap decreased systematically from 3.3 to 3 eV with increasing Ag nanoparticles, where Ag concentration increased from 5% to 11%wt. The FTIR measurement showed a shifting in the FTIR absorption peaks with Ag concentration. AFM and SEM images indicate that there are a few clusters of Ag and there is a uniform distribution of the Ag nanoparticles in the PANI matrix. It can be concluded that Ag/PANI nanocomposite thin films with controlled optical energy band gap can be prepared by microwave induced plasma technique.

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“…used the values of the parameters E (energy level) and Ag (Transition probability) taken from NIST (The National Institute of Standards and Technology) (NIST atomic spectra database),also The values of E k ,E i , A k g k , A i g i , and are obtained from the NIST atomic spectral database. The density of the electron can be measured in several ways, namey the Doppler and Stark expansion [8] where Stark expansion is in relation to local electric fields; therefore, it is one of the most important characteristics of the expansion of the plasma spectral line [9]. Through these methods, density of electrons can be measured with reasonable accuracy.…”

Section: Introductionmentioning

confidence: 99%

Investigation the effect of operating conditions on Te and ne of Argon plasma glow discharge at cathode graphite

Khadayeir

yousif²

2019

JK-Physics

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In this study, the spectral analysis technique was used to calculate the electron temperature and density of argon gas using the ratio method between the two spectral lines. These parameters were calculated at different pressures (0.375, 0.75, 1.5, 1.875, 2.25 torr) and voltages (240, 250, 260, 270, 280 volt). The results showed that the temperature of the electron increases by increasing the voltage and decreases with increasing pressure, while the density of the electrons increases by increasing the voltage and the pressure. where the temperature of the electrons was calculated and it was at the limitations of (0.28 - 0.54eV), As for the density of electrons was at the limitations of (1.5 × 1012 - 3.7 × 1012 cm – 3) .

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Determination of electron density in a wall stabilized Ar-CO ${\mathsf{_2}}$ thermal plasma

Cited by 7 publications

References 28 publications

Polyaniline/TiO2 nanocomposite thin films prepared by microwave plasma

Polyaniline/TiO2 nanocomposite thin films prepared by microwave plasma

Characterization of silver polyaniline nanocomposite thin films prepared by microwave induced plasma

Investigation the effect of operating conditions on Te and ne of Argon plasma glow discharge at cathode graphite

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