Review of the advanced generalized theory for Stark broadening of hydrogen lines in plasmas with tables

Touma, J.; Oks, Eugene; Alexiou, S.; Derevianko, Andrei

doi:10.1016/s0022-4073(99)00095-3

Cited by 35 publications

(19 citation statements)

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“…We compare our experimental Hα widths primarily with Oks' theory of Stark widths [3][4][5][6][7]. The latter incorporates several major theoretical advances and new phenomena in the Stark broadening of hydrogen lines in plasmas.…”

Section: Stark Widthsmentioning

confidence: 99%

“…Benchmarking theories of Stark broadening of spectral lines in dense plasmas to experiments, where plasma parameters are measured independently of the Stark-broadened lineshapes, is important for diagnostic applications (see, e.g., [1,2]) and for verifying the latest theoretical developments, including some new dense-plasma effects [3][4][5][6][7][8][9][10][11]. The latter phenomena, such as various couplings of the electron and ion microfields [3-5, 7, 8, 10, 11], are expected to become more pronounced as a plasma approaches a non-ideal state.…”

Section: Introductionmentioning

confidence: 99%

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Comparison of the Stark widths and shifts of the H-alpha line measured in a flash tube plasma with theoretical results

Flih

Oks

Vitel

2003

J. Phys. B: At. Mol. Opt. Phys.

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We present Stark widths and shifts of the Hα line measured in a flash tube plasma in the electron density range N e = (1-4)×10 18 cm −3 and the temperature range T = 1-2 eV. The plasma parameters were measured independently of the width and shift of the Hα line. We found that the Hα widths and shifts, measured at two different plasma sources, producing 'warm dense matter' of similar parameters-the underwater discharge and the flash tube-are consistent with each other. Our experimental results are in a good agreement with Oks' theory of Stark widths and shifts. As a conventional reference, we also compared our experimental results with Griem's theory of Stark widths and shifts. For Griem's shifts we found discrepancies of up to 76%. Griem's widths lie mostly within the experimental error bars; however, their rms deviation from the most probable experimental widths is up to 44% greater than for Oks' widths. Therefore our experiment provides further proof of some new warm-dense-matter effects incorporated in Oks' theory, the most important of which is the acceleration of the perturbing electrons by the ion field.

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Section: Stark Widthsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Comparison of the Stark widths and shifts of the H-alpha line measured in a flash tube plasma with theoretical results

Flih

Oks

Vitel

2003

J. Phys. B: At. Mol. Opt. Phys.

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“…Theoretical calculations for the analysis of experimental results have been performed using the standard theory and computer simulations of Gigosos et al [19,49]. Furthermore, a generalized Stark broadening theory of hydrogen lines in plasmas is published by Touma et al [50], and by Ispolatov and Oks [51]. Obviously our approach is in good agreement with other theoretical descriptions and provides a reasonable method to infer plasma parameters from the experimental measurements of spectral line shapes.…”

Section: Discussionmentioning

confidence: 55%

Diagnostics of High‐Pressure Arc Plasmas by Hydrogen Balmer Spectra

Omar

Wierling

Röpke

2011

Contrib. Plasma Phys.

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We re-examine several Balmer spectra obtained from high-pressure arc discharges (Radtke and Günther, Contrib. Plasma Phys. 26, 143 (1986); Radtke, Günther, and Spanke, ibid. 26, 151 (1986)). By matching synthetic spectra to the experimental line profiles, we infer plasma parameters such as density, temperature, and composition. Spectral line modeling is based on a microscopic quantum statistical approach. Corrections accounting to the merging lines near the threshold are describe following a model of D'yachkov. Self-absorption is clearly visible in the spectra and accounted for in one-dimensional model assuming thermal equilibrium. A consistency check is performed by comparing to the broadening of silicon impurity lines, where present in some of the spectra. Furthermore, a comparison is made with predictions from a fluid variational model for the composition and the equation of state of the plasma.

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“…Moreover, the H β line profile is measured in the T-tube discharge for a wide range of plasma parameters, and analyzed according to our theoretical calculation in Rostock [33]. Furthermore, the generalized theory of the Stark broadening of hydrogen lines in plasmas is published by Touma et al [34], and by Ispolatov and Oks [35]. Altogether, our approach is in good agreement with other theoretical descriptions and provides a reliable method to infer plasma parameters from the experimental line shapes.…”

Section: Discussionmentioning

confidence: 99%

Hydrogen Balmer Spectrum from a High‐Pressure Arc Discharge: Revisited

Omar

Wierling

Günter

et al. 2007

Contrib. Plasma Phys.

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The interpretation of hydrogen Balmer spectra emitted from a high-pressure arc discharge (Radtke and Günther, Contrib. Plasma Phys. 26, 143 (1986)) is re-examined. Assuming local thermodynamic equilibrium, synthetic Balmer spectra are calculated for given temperature and density conditions. Radiation transport is accounted for using a one-dimensional plasma layer model. The lineshape of bound-bound transitions is determined using a microscopic quantum-statistical approach. Free-free and free-bound contributions are added by taking expressions from literature. Comparing the synthetic spectra with experimental ones, plasma temperature and density conditions are inferred. The plasma parameters are confronted with theoretical results for the compositions of dense plasma.

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Review of the advanced generalized theory for Stark broadening of hydrogen lines in plasmas with tables

Cited by 35 publications

References 1 publication

Comparison of the Stark widths and shifts of the H-alpha line measured in a flash tube plasma with theoretical results

Comparison of the Stark widths and shifts of the H-alpha line measured in a flash tube plasma with theoretical results

Diagnostics of High‐Pressure Arc Plasmas by Hydrogen Balmer Spectra

Hydrogen Balmer Spectrum from a High‐Pressure Arc Discharge: Revisited

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