Revised analysis of the Cu IV spectrum

Meinders, E.

doi:10.1016/0378-4363(76)90014-0

Cited by 11 publications

(9 citation statements)

References 5 publications

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“…The information about higher ionization states of Cu, for instance, Cu IV can be found in Ref. 22. Comparison between these data and the results of current measurements confirms that such ionization state is not present in the plasma for studied parameter range.…”

Section: Identification Of the Spectral Linessupporting

confidence: 66%

“…In more complex cases, the element symbol and ionization stage is shown without wavelength. Spectral lines which are not presented in known tables [20][21][22][23][24][25] but observed during the experiment are labeled with question mark "?." For most of them according to the axial profile, it is possible to speculate which element and ionization state they are, therefore after "?"…”

Section: A Spectra Of High-current Vacuum Arc (Hcva)mentioning

confidence: 99%

“…Several data sources [20][21][22][23][24][25] are used for spectral lines identification. Zaidel table of spectral lines 25 is used for the intensive lines identification.…”

Section: Identification Of the Spectral Linesmentioning

confidence: 99%

“…Assignment of the spectral lines on the base of spectroscopic tables [20][21][22][23][24][25] has been verified by axial distribution of the species emission. Unambiguous identification is required for obtaining axial intensity distributions of a single species.…”

Section: Identification Of the Spectral Linesmentioning

confidence: 99%

“…10,13 For the application of the plasma characterization methods based on OES spectral line identification should be performed primarily. The Cu spectrum is densely populated with lines and contains many transition in abundance, [20][21][22][23][24][25] which often is the reason for overlapping of the lines and makes the line identification challenging. 26 The use of the alloys causes additional difficulties due to appearance of characteristic lines of each alloy component.…”

Section: Introductionmentioning

confidence: 99%

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Overview spectra and axial distribution of spectral line intensities in a high-current vacuum arc with CuCr electrodes

Lisnyak

Pipa

Gorchakov

et al. 2015

Journal of Applied Physics

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Spectroscopic investigations of free-burning vacuum arcs in diffuse mode with CuCr electrodes are presented. The experimental conditions of the investigated arc correspond to the typical system for vacuum circuit breakers. Spectra of six species Cu I, Cu II, Cu III, Cr I, Cr II, and Cr III have been analyzed in the wavelength range 350-810 nm. The axial intensity distributions were found to be strongly dependent on the ionization stage of radiating species. Emission distributions of Cr II and Cu II can be distinguished as well as the distributions of Cr III and Cu III. Information on the axial distribution was used to identify the spectra and for identification of overlapping spectral lines. The overview spectra and some spectral windows recorded with high resolution are presented. Analysis of axial distributions of emitted light, which originates from different ionization states, is presented and discussed.

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Section: Identification Of the Spectral Linessupporting

confidence: 66%

Section: A Spectra Of High-current Vacuum Arc (Hcva)mentioning

confidence: 99%

“…Several data sources [20][21][22][23][24][25] are used for spectral lines identification. Zaidel table of spectral lines 25 is used for the intensive lines identification.…”

Section: Identification Of the Spectral Linesmentioning

confidence: 99%

Section: Identification Of the Spectral Linesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Overview spectra and axial distribution of spectral line intensities in a high-current vacuum arc with CuCr electrodes

Lisnyak

Pipa

Gorchakov

et al. 2015

Journal of Applied Physics

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Stellar laboratories

Rauch¹,

Gamrath

Quinet

et al. 2020

A&A

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IX. New Se v, Sr ivvii, Te vi, and I vi oscillator strengths and the Se, Sr, Te, and I abundances in the hot white dwarfs G191−B2B and RE 0503−289 ⋆,⋆⋆,⋆⋆⋆ ABSTRACT Context. To analyze spectra of hot stars, advanced non-local thermodynamic equilibrium (NLTE) model-atmosphere techniques are mandatory. Reliable atomic data is crucial for the calculation of such model atmospheres.Aims. We aim to calculate new Sr iv-vii oscillator strengths to identify for the first time Sr spectral lines in hot white dwarf (WD) stars and to determine the photospheric Sr abundances. To measure the abundances of Se, Te, and I in hot WDs, we aim to compute new Se v, Te vi, and I vi oscillator strengths. Methods. To consider radiative and collisional bound-bound transitions of Se v, Sr ivvii, Te vi, and I vi in our NLTE atmosphere models, we calculated oscillator strengths for these ions.Results. We newly identified four Se v, 23 Sr v, 1 Te vi, and three I vi lines in the ultraviolet (UV) spectrum of RE 0503−289. We measured a photospheric Sr abundance of 6.5 +3.8 −2.4 × 10 −4 (mass fraction, 9 500 -23 800 times solar). We determined the abundances of Se (1.6 +0.9 −0.6 × 10 −3 , 8 000 -20 000), Te (2.5 +1.5 −0.9 × 10 −4 , 11 000 -28 000), and I (1.4 +0.8 −0.5 × 10 −5 , 2 700 -6 700). No Se, Sr, Te, and I line was found in the UV spectra of G191−B2B and we could determine only upper abundance limits of approximately 100 times solar. Conclusions. All identified Se v, Sr v, Te vi, and I vi lines in the UV spectrum of RE 0503−289 were simultaneously well reproduced with our newly calculated oscillator strengths.

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Energies of N equivalent electrons expressed in terms of two-electron energies and independent three-electron parameters: a new complete set of orthogonal operators. II. Application to 3d^Nconfigurations

Uylings¹,

Raassen²,

Wyart³

1984

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

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Revised analysis of the Cu IV spectrum

Cited by 11 publications

References 5 publications

Overview spectra and axial distribution of spectral line intensities in a high-current vacuum arc with CuCr electrodes

Overview spectra and axial distribution of spectral line intensities in a high-current vacuum arc with CuCr electrodes

Stellar laboratories

Energies of N equivalent electrons expressed in terms of two-electron energies and independent three-electron parameters: a new complete set of orthogonal operators. II. Application to 3d^Nconfigurations

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Revised analysis of the Cu IV spectrum

Cited by 11 publications

References 5 publications

Overview spectra and axial distribution of spectral line intensities in a high-current vacuum arc with CuCr electrodes

Overview spectra and axial distribution of spectral line intensities in a high-current vacuum arc with CuCr electrodes

Stellar laboratories

Energies of N equivalent electrons expressed in terms of two-electron energies and independent three-electron parameters: a new complete set of orthogonal operators. II. Application to 3dNconfigurations

Contact Info

Product

Resources

About

Energies of N equivalent electrons expressed in terms of two-electron energies and independent three-electron parameters: a new complete set of orthogonal operators. II. Application to 3d^Nconfigurations