Methods for spectroscopic measurement of electric field in atmospheric pressure helium discharges

Obradović, Bratislav M.; Cvetanović, Nikola; Ivković, S S; Sretenović, Goran B.; Kovačević, Vladimir; Krstić, Ivan; Kuraica, M. M.

doi:10.1051/epjap/2017160479

Cited by 12 publications

(12 citation statements)

References 15 publications

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“…However, as the present comparisons of code calculations to the experimental spectra are aimed to highlight any differences between the codes and as resonance broadening was ignored in the fitting of experimental spectra, we cannot draw any reliable conclusion about the inferred plasma densities. One should note that other authors support that the conditions considered in this paper are more relevant to the electric field measurements than to electron density diagnostics [18]. However, this is another issue which deserves to be addressed but it is beyond the scope of this paper.…”

Section: Preliminary Comparison With An Experimental Spectrummentioning

confidence: 79%

Broadening of the Neutral Helium 492 nm Line in a Corona Discharge: Code Comparisons and Data Fitting

Sheeba

Koubiti

Bonifaci

et al. 2018

Atoms

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Passive plasma spectroscopy is a well-established non-intrusive diagnostic technique. Depending on the emitter and its environment which determine the dominant interactions and effects governing emission line shapes, passive spectroscopy allows the determination of electron densities, emitter and perturber temperatures, as well as other quantities like relative abundances. However, using spectroscopy requires appropriate line shape codes retaining all the physical effects governing the emission line profiles. This is required for line shape code developers to continuously correct or improve them to increase their accuracy when applied for diagnostics. This is exactly the aim expected from code-code and code-data comparisons. In this context, the He I 492 nm line emitted in a helium corona discharge at room temperature represents an ideal case since its profile results from several broadening mechanisms: Stark, Doppler, resonance, and van der Waals. The importance of each broadening mechanism depends on the plasma parameters. Here the profiles of the He I 492 nm in a helium plasma computed by various codes are compared for a selected set of plasma parameters. In addition, preliminary results related to plasma parameter determination using an experimental spectrum from a helium corona discharge at atmospheric pressure, are presented.

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Section: Preliminary Comparison With An Experimental Spectrummentioning

confidence: 79%

Broadening of the Neutral Helium 492 nm Line in a Corona Discharge: Code Comparisons and Data Fitting

Sheeba

Koubiti

Bonifaci

et al. 2018

Atoms

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“…Several hydrogen-based studies showed well-dened electric eld distribution in the CS [15][16][17][18][19][20][21][22] and constituted the experimental basis for establishing the iterative kinetic model of the CS. 21,22 Further investigations were extended to the inuence of the Stark effect on the non-hydrogen lines starting with helium, [23][24][25][26] towards heavier elements like neon and argon. [27][28][29][30][31] In a most recent development, [32][33][34] the inuence of the CS electric eld on the complex shapes of Ne II lines is reported as a tool for electric eld mapping.…”

Section: Introductionmentioning

confidence: 99%

Estimation of the maximum electric field strength in the cathode sheath of a Grimm-type glow discharge by end-on view optical emission spectroscopy in neon and argon

Nedić

Ivanović

Videnović

et al. 2022

J. Anal. At. Spectrom.

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“…The OES technique for E measurements in CS has been applied most frequently to hydrogen Balmer lines [18][19][20][21][22][23]. The next step in the application of the OES technique for E field strength mapping [24][25][26][27] were several visible helium lines with forbidden components. Recent E measurements using non-hydrogenic Ne I and Ar I lines extended the range of OES applications to other inert gasses [28][29][30][31].…”

Section: Introductionmentioning

confidence: 99%

Complex UV Ne II line shapes in the cathode sheath of an abnormal glow discharge

Spasojević

Ivanović

Nedić

et al. 2020

Plasma Sources Sci. Technol.

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We report results of an experimental and theoretical study of complex UV line shapes of Ne II 369.421 nm, Ne II 371.308 nm and Ne II 372.711 nm lines in the cathode sheath (CS) region of an abnormal glow discharge in pure neon. The experimental profiles were studied by means of the optical emission spectroscopy (OES) in conjunction with an iterative CS kinetic model. It is shown that our theoretical model describes the experimental line shapes and that, with the aid of the measured Stark shifts of atomic neon lines, it can be used for the determination of the most important CS parameters (e.g. the thickness of the CS region, distribution of electric field, and the gas temperature). We draw attention to the possibility of determining the electric field strength in CS from the width of the pedestal of the complex line profiles.

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Methods for spectroscopic measurement of electric field in atmospheric pressure helium discharges

Cited by 12 publications

References 15 publications

Broadening of the Neutral Helium 492 nm Line in a Corona Discharge: Code Comparisons and Data Fitting

Broadening of the Neutral Helium 492 nm Line in a Corona Discharge: Code Comparisons and Data Fitting

Estimation of the maximum electric field strength in the cathode sheath of a Grimm-type glow discharge by end-on view optical emission spectroscopy in neon and argon

Complex UV Ne II line shapes in the cathode sheath of an abnormal glow discharge

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