Asymmetry of<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msub><mml:mi mathvariant="normal">H</mml:mi><mml:mi>β</mml:mi></mml:msub></mml:math>Stark profiles in T-tube hydrogen plasma

Djurovic, Srdjan; Nikolić, D.; Savić, I.; Sorge, S.; Demura, A. V.

doi:10.1103/physreve.71.036407

Cited by 31 publications

(26 citation statements)

References 60 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The description of plasma source and experimental arrangement is given in our previous works (Djurović et al 2005(Djurović et al , 2009). Nevertheless, we provide some details here for completeness.…”

Section: Methodsmentioning

confidence: 99%

Stark broadening of lines from transition between statesn = 3 ton = 2 in neutral helium

Djurović

Savić

et al. 2014

A&A

Self Cite

View full text Add to dashboard Cite

Context. The Stark broadening of the spectral lines of the wavelengths 501. 6, 667.8, 728.1, 388.9, 587.6, and 706.5 nm from neutral helium in plasmas are studied theoretically and experimentally. Aims. The aim of this work is to provide information about the connection between the shape and width of spectral lines and the electron density and temperature to be used as a diagnostic tool. Methods. The theoretical calculations were carried out through molecular dynamics computer simulations with noninteracting particles. The experimental measurements were done in a plasma of pure helium generated in an electromagnetically driven T-tube. The plasma diagnostics used previous results about the Stark broadening of the He I 447.1 nm and He I 492.2 nm lines and the coherence between the shape of these spectra and those obtained here. The electron temperature was obtained through a Boltzmann-plot of eight lines of Si II. Results. Several tables of width and shift are provided in a wide range of electron density and temperature. Furthermore, we supply several fitting formulas, which allow calculating the plasma electron density from the measured values of the spectral line widths. The results obtained in the laboratory and in the simulations are compared with the data from the literature.

show abstract

Section: Methodsmentioning

confidence: 99%

Stark broadening of lines from transition between statesn = 3 ton = 2 in neutral helium

Djurović

Savić

et al. 2014

A&A

Self Cite

View full text Add to dashboard Cite

show abstract

“…Stark broadened emission profiles of the H β line are also measured in a laser induced hydrogen plasmas by Parigger et al [32]. 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].…”

Section: Discussionmentioning

confidence: 97%

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

Omar

Wierling

Günter

et al. 2007

Contrib. Plasma Phys.

View full text Add to dashboard Cite

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.

show abstract

“…Stark broadening profiles of the H β line are also measured in a laser induced hydrogen plasmas by Parigger et al [7]. 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 [18]. Lately, the experimental measurements of the center of the H β Stark profile have been done by Djurović et al [19] to study its asymmetry in wide ranges of electron density and temperature.…”

Section: Discussionmentioning

confidence: 99%

“…Note, that precise measurements of the H α and H β line from T-tube discharges became available [18,19] recently.…”

Section: Introductionmentioning

confidence: 99%

Diagnostics of High‐Pressure Arc Plasmas by Hydrogen Balmer Spectra

Omar

Wierling

Röpke

2011

Contrib. Plasma Phys.

View full text Add to dashboard Cite

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.

show abstract

Asymmetry ofHβStark profiles in T-tube hydrogen plasma

Cited by 31 publications

References 60 publications

Stark broadening of lines from transition between statesn = 3 ton = 2 in neutral helium

Stark broadening of lines from transition between statesn = 3 ton = 2 in neutral helium

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

Diagnostics of High‐Pressure Arc Plasmas by Hydrogen Balmer Spectra

Contact Info

Product

Resources

About