Pecularities of spectroscopic properties of<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msup><mml:mi mathvariant="normal">W</mml:mi><mml:mrow><mml:mn>24</mml:mn><mml:mo>+</mml:mo></mml:mrow></mml:msup></mml:mrow></mml:math>

Gaigalas, Gediminas; Rudzikas, Zenonas; Gaidamauskas, Erikas; Rynkun, Pavel; Alkauskas, Audrius

doi:10.1103/physreva.82.014502

Cited by 16 publications

(17 citation statements)

References 15 publications

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“…Gaigalas et al [25] studied the properties of Sn-like W 24+ using ab initio MCDF calculations. This spectrum is peculiar because its ground configuration 4d 10 4f 4 does not combine with the first excited configuration 4d 10 4f 3 5s via singleelectron electric-dipole transitions because of the selection rules for such transitions.…”

Section: Calculations Of Hyperfine-induced Forbidden Transitionsmentioning

confidence: 99%

Recent progress in spectroscopy of tungsten¹This review is part of a Special Issue on the 10th International Colloquium on Atomic Spectra and Oscillator Strengths for Astrophysical and Laboratory Plasmas.

Kramida

2011

Can. J. Phys.

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This contribution reviews experimental and theoretical work on spectroscopy of tungsten published since the last critical compilation of the energy levels and spectral lines of highly ionized tungsten (Kramida and Shirai. At. Data Nucl. Data Tables, 95, 305 (2009)). Since then, 18 new experimental studies were published, which resulted in new identifications and (or) significantly improved wavelengths of spectral lines and energy levels of Li-like through As-like and Pm-like tungsten. A few tens of theoretical studies of tungsten spectra were published since 2008. A number of them report on high-precision calculations of energy levels, transition wavelengths, and radiative rates for tungsten spectra, such as neutral tungsten, Yb-like, Rh-like through Rb-like, Ag-like, Ga-like, Zn-like, Ni-like, Ca-like, Al-like, Mg-like, Na-like, Ne-like, B-like, Be-like, and Li-like. These developments are reviewed. Based on new experimental data, systematic errors are removed from some of the earlier measurements. Some new data are obtained by analyzing publications of other authors. Based on new published theoretical data, some old experimental results were confirmed and assessed. Revised and extended tables of energy levels and spectral lines of highly ionized tungsten are presented. PACS Nos: 32.10.Fn, 32.30.-r, 32.30.Jc, 32.30.Rj Résumé : Nous passons ici en revue les travaux expérimentaux et théoriques sur la spectroscopie du tungstène, qui ont été publiés depuis la dernière compilation systématique des niveaux d'énergie et des raies spectrales du tungstène hautement ionisé (Kamida et Shirai. At. Data Nucl. Data Tables, 95, 305 (2009)). Depuis, 18 nouvelles études expérimentales ont été publiées, qui ont résulté en de nouvelles identifications et une amélioration significative des longueurs d'onde des raies et de l'énergie des niveaux des ions de tungstène allant du type Li jusqu'aux types As et Pm. Quelques dizaines études théoriques sur le tungstène ont été publiées depuis 2008. Certaines d'entre elles rapportent des calculs de haute précision de niveaux d'énergie, de longueurs d'onde de transitions et de taux radiatifs pour des spectres de tungstène, neutre et ionisé de types Yb, de Rh à Rb, Ag, Ga, Zn, Ni, Ca, Al, Mg, Na, Ne, B, Be et Li. Nous les passons en revue. Les mesures récentes ont permis d'éliminer certaines erreurs systématiques des mesures antérieures. Certains nouveaux résultats viennent de l'analyse de publications d'autres auteurs. Les nouveaux résultats théoriques ont permis de confirmer des résultats expérimentaux antérieurs dont l'identification restait incertaine. Nous présentons des tables nouvelles et étendues des niveaux d'énergie et des raies spectrales du tungstène hautement ionisé. [Traduit par la Rédaction]

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Section: Calculations Of Hyperfine-induced Forbidden Transitionsmentioning

confidence: 99%

Recent progress in spectroscopy of tungsten¹This review is part of a Special Issue on the 10th International Colloquium on Atomic Spectra and Oscillator Strengths for Astrophysical and Laboratory Plasmas.

Kramida

2011

Can. J. Phys.

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“…Needed are atomic data for highly ionized tungsten atoms that may appear as impurities in hot plasmas. The feasibility of accurate theoretical studies for complex atoms with open f shells was investigated recently by Gaigalas et al [1] and applied to W +24 . Without experimental data, the accuracy of transition data could only be related to the gauge dependence of the theoretical results.…”

Section: Introductionmentioning

confidence: 99%

Multiconfiguration Dirac-Hartree-Fock energy levels and transition probabilities for W xxxviii

Fischer

Gaigalas

2012

Phys. Rev. A

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Energies, lifetimes, and wave-function compositions have been computed for all levels of 4p 6 4d, 4p 6 4f, and 4p 5 4d 2 using single and double excitations from a multireference set (SD-MR) to generate expansions for the multiconfiguration Dirac-Hartree-Fock (MCDHF) approximation. An extended version of the general relativistic atomic structure package, GRASP2K, was used to deal with configuration state functions with as many as six open shells and with configurations containing as many as three f electrons. E1, E2, M1 transition probabilities are reported for transitions between the levels as supplemental material. Results are compared with other theory and with experiment, when available.

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“…The energy spectrum of this ion remains unexplored, and there are just a few works dedicated to the open fshell tungsten ions [2][3][4][5]. In [2] large-scale nonrelativistic and relativistic calculations were performed of the lowest 997 energy levels of W 24+ accounting for the correlation, relativistic, and QED effects.…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

“…In [2] large-scale nonrelativistic and relativistic calculations were performed of the lowest 997 energy levels of W 24+ accounting for the correlation, relativistic, and QED effects. They demonstrated the high efficacy of the methods used [1,2]. All these levels correspond to [ The main peculiarity of the ground configuration consists in the fact that the electron transitions in the usual form of electric-dipole radiation from the closest excited configurations to the ground configuration are strictly forbidden.…”

Section: Introductionmentioning

confidence: 99%

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Dependence of the probabilities of the electric-multipole electron transitions inW24+on multipolarity

Gaigalas

Rudzikas

Rynkun³

et al. 2011

Phys. Rev. A

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Usually it is accepted that the probabilities of the electric-multipole electron transitions are rapidly decreasing functions of their multipolarity. Therefore while calculating the probabilities of electronic transitions between the configurations of certain chosen parities, it seems sufficient to take into account the first nonzero term, i.e., to consider the electron transitions of lowest multipolarity permitted by the exact selection rules. This paper aims at verifying this assumption on the example of electric-octupole transitions in W 24+ ion. For this purpose the large-scale multiconfiguration Hartree-Fock and Dirac-Fock calculations have been performed for the configurations [Kr]4d 10 4f 4 and [Kr]4d 10 4f 3 5s energy levels of W 24+ ion. The relativistic corrections were taken into account in the quasirelativistic Breit-Pauli and fully relativistic Breit (taking into account QED effects) approximations. The role of correlation, relativistic, and QED corrections is discussed. Line strengths, oscillator strengths, and transition probabilities in Coulomb and Babushkin gauges are presented for E1 and E3 transitions among these levels.

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Pecularities of spectroscopic properties ofW24+

Cited by 16 publications

References 15 publications

Recent progress in spectroscopy of tungsten¹This review is part of a Special Issue on the 10th International Colloquium on Atomic Spectra and Oscillator Strengths for Astrophysical and Laboratory Plasmas.

Recent progress in spectroscopy of tungsten¹This review is part of a Special Issue on the 10th International Colloquium on Atomic Spectra and Oscillator Strengths for Astrophysical and Laboratory Plasmas.

Multiconfiguration Dirac-Hartree-Fock energy levels and transition probabilities for W xxxviii

Dependence of the probabilities of the electric-multipole electron transitions inW24+on multipolarity

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Pecularities of spectroscopic properties ofW24+

Cited by 16 publications

References 15 publications

Recent progress in spectroscopy of tungsten1This review is part of a Special Issue on the 10th International Colloquium on Atomic Spectra and Oscillator Strengths for Astrophysical and Laboratory Plasmas.

Recent progress in spectroscopy of tungsten1This review is part of a Special Issue on the 10th International Colloquium on Atomic Spectra and Oscillator Strengths for Astrophysical and Laboratory Plasmas.

Multiconfiguration Dirac-Hartree-Fock energy levels and transition probabilities for W xxxviii

Dependence of the probabilities of the electric-multipole electron transitions inW24+on multipolarity

Contact Info

Product

Resources

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Recent progress in spectroscopy of tungsten¹This review is part of a Special Issue on the 10th International Colloquium on Atomic Spectra and Oscillator Strengths for Astrophysical and Laboratory Plasmas.

Recent progress in spectroscopy of tungsten¹This review is part of a Special Issue on the 10th International Colloquium on Atomic Spectra and Oscillator Strengths for Astrophysical and Laboratory Plasmas.