Stark Broadening of the Ar I Spectral Lines 763.51, 738.39 and 696.54 nm

Dimitrijević, M. S.; Skuljan, L.; Djenie, S.

doi:10.1238/physica.regular.066a00077

Cited by 8 publications

(9 citation statements)

References 28 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The estimates are given using code letters: A = uncertainties within 15%; B + = 23%; B = 30%; C + = 40%; C = 50%. in [48] are also added. The calculations in [48] are performed for multiplet transition in j-L coupling.…”

Section: Comparison With Other Theoretical and Experimental Resultsmentioning

confidence: 99%

Stark broadening of visible Ar I spectral lines

2007

Self Cite

View full text Add to dashboard Cite

Stark broadening parameters (width and shift) of six Ar I spectral lines: 522.1, 549.6, 518.6, 560.7, 603.2 and 696.5 nm, corresponding to the transitions 3p 5 nd → 3p 5 4p for n = 7-5 and 4p → 4s have been calculated on the basis of the impact theory within the semi-classical perturbation approach. The case of the quasistatic ions has also been examined. The conditions of use of the presented results have been discussed. The considered lines are in the optical part of the spectrum and are of interest for laboratory research, particularly surface wave sustained discharges, and astrophysical purposes. The obtained results are compared with published experimental results and values calculated by other authors. The influence of the used coupling ( j-L or L S) and oscillator strengths (The Opacity Project (TOP) database or Coulomb approximation) has also been considered.

show abstract

Section: Comparison With Other Theoretical and Experimental Resultsmentioning

confidence: 99%

Stark broadening of visible Ar I spectral lines

2007

Self Cite

View full text Add to dashboard Cite

show abstract

“…[24] (4 10 17 cm ÿ3 at 2000 bar). Stark widths scale linearly with n e at a specific temperature [17] and have been determined for the Ar 763.51 nm line [25]. From this, we use the n e (3:8 10 17 cm ÿ3 ) and T c (10 000 K) determined from the SBSL Ar line and find the Stark contribution to be 0.3 nm.…”

mentioning

confidence: 99%

Measurement of Pressure and Density Inside a Single Sonoluminescing Bubble

et al. 2006

View full text Add to dashboard Cite

The average pressure inside a sonoluminescing bubble in sulfuric acid has been determined by two independent techniques: (1) plasma diagnostics applied to Ar atom emission lines, and (2) light scattering measurements of bubble radius vs time. For dimly luminescing bubbles, both methods yield intracavity pressures approximately 1500 bar. Upon stronger acoustic driving of the bubble, the sonoluminescence intensity increases 10,000-fold, spectral lines are no longer resolved, and radius vs time measurements yield internal pressures > 3700 bar. Implications for a hot inner core are discussed.

show abstract

“…The measured data was not Abel transformed, since simulated spectra were spatially integrated. The presented lines were selected as an example for the fit, as their spectral broadening data are also available in, for example, [15,16]. As can be seen here, for all cases the measured and simulated spectral lines are in good agreement.…”

Section: Pure Argonmentioning

confidence: 83%

“…with v e,th being the electron thermal velocity, ñe the electron density, λ ↑−↓ the wavelength of the transition between an excited state | ↑ and a lower energy state | ↓ and f ↑−↓ the corre sponding oscillator strength. The Stark broadening FWHM for pure argon derived through this simplified model are compared with results from the literature [16,19]. The data for λ ↑−↓ and f ↑−↓ are extracted from NIST atomic spectra database [20] for the respective gas.…”

Section: Spectral Line Broadening and The Stark Effectmentioning

confidence: 99%

See 1 more Smart Citation

Time efficient radiation model for determination of plasma parameters in atmospheric plasmas

Mallon¹,

Kühn-Kauffeldt²,

Marqués³

et al. 2019

J. Phys. D: Appl. Phys.

View full text Add to dashboard Cite

A simple and time efficient model for atmospheric arc plasmas is presented in this work. It uses experimentally recorded emission spectra in order to estimate radial temperature and electron density profiles in welding arc plasmas. The plasma parameters are calculated using the Elenbaas-Heller and Saha equations, together with welding current, gas composition and simplified cylindrical arc geometry with a particular radius as input parameters. From these parameters an emission spectrum is calculated under the assumption, that the individual lines are mainly broadened due to the Stark effect. Here only second order perturbation theory for the Stark effect without any further influences of ion collision or other additional effects is considered. The comparison of measured and calculated spectra leads to a cost function. Its minimisation is used to find the radius of the arc model. This model was successfully applied for the estimation of plasma parameters in gas tungsten arc welding processes with argon and argon-helium as shielding gases. The calculated gas temperature and electron density profiles were compared with experimental data obtained by Thomson scattering. Further extension of the model for dynamic processes containing metal vapours and its application in feedback control are planned in the future.

show abstract

Stark Broadening of the Ar I Spectral Lines 763.51, 738.39 and 696.54 nm

Cited by 8 publications

References 28 publications

Stark broadening of visible Ar I spectral lines

Stark broadening of visible Ar I spectral lines

Measurement of Pressure and Density Inside a Single Sonoluminescing Bubble

Time efficient radiation model for determination of plasma parameters in atmospheric plasmas

Contact Info

Product

Resources

About