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- W3124814013 abstract "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 abundances. However, using spectroscopy needs appropriate line shape codes retaining all the physical effects governing the emission line profiles. This requires 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 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 experimental spectra from a helium corona discharge at low pressure 1- 2 bars, are presented." @default.
- W3124814013 created "2021-02-01" @default.
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- W3124814013 date "2018-03-07" @default.
- W3124814013 modified "2023-09-26" @default.
- W3124814013 title "Broadening of the Neutral Helium 492 nm Line in a Corona Discharge: Code Comparisons and Data Fitting" @default.
- W3124814013 doi "https://doi.org/10.20944/preprints201803.0037.v1" @default.
- W3124814013 hasPublicationYear "2018" @default.
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