Spontaneous radiative decay rates in Ga‐like ions

Charro, E.; Curiel, Z.; Martı́n, I.

doi:10.1002/qua.21552

Cited by 9 publications

(3 citation statements)

References 31 publications

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“…Charro et al [50] calculated radiative rates of forbidden (M1 and E2) 4p 1/2 -4p 3/2 transitions within the ground configuration 3d 10 4s 2 4p in Ga-like ions (Z = 31-80). They used the relativistic quantum defect orbital (RQDO) method.…”

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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“…Quinet et al [14] computed the wavelengths and transition rates in x-ray spectra of highly charged Ga-like ions from Yb 39+ to U 61+ using multiconfiguration Hartree-Fock (MCHF) wavefunctions. Charro et al [15] calculated the wavelengths and transition rates for 4𝑠 2 4𝑝 2 𝑃 3/2 -4𝑠 2 4𝑝 2 𝑃 1/2 emission lines in Ga isoelectron sequence with the relativistic quantum defect orbital (RQDO) method. Safronova et al [16] calculated the energies and lifetimes of the 4𝑠 2 4𝑝 2 𝑃 3/2 state in Ga-like ions applying the relativistic many-body perturbation the-ory (RMBPT).…”

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confidence: 99%

Energy-Crossing and Its Effect on Lifetime of the 4 s ² 4 p ² P _3/2 Level for Highly Charged Ga-Like Ions

Jiang¹,

Zhang²,

Chang³

et al. 2012

Chinese Phys. Lett.

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The multi-configuration Dirac-Fock method is employed to calculate the energy levels and transition probabilities for the electric dipole allowed (E1) and forbidden (M1, E2) lines for the 4𝑠 2 4𝑝, 4𝑠4𝑝 2 and 4𝑠 2 4𝑑 configurations of highly charged Ga-like ions from 𝑍 = 68-95. The lifetimes of the 4𝑠 2 4𝑝 2 𝑃 3/2 level of the ground configuration are also derived. Based on our calculations, it is found that the energy level of the 4𝑠 2 4𝑝 2 𝑃 3/2 is higher than that of the 4𝑠4𝑝 2 4 𝑃 1/2 for the high-𝑍 Ga-like ions with 𝑍 ≥ 74, so as to generate an energy crossing at 𝑍 = 74. The effect of the energy crossing is important to the calculation of the 4𝑠 2 4𝑝 2 𝑃 3/2 level lifetime for Ga-like ions with 𝑍 ≥ 74.

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“…The same paper references the discovery of GeII in a photospheric spectrum of a chemically peculiar B-star, χ Lupi, in experiments with the Hubble Space Telescope. Finally, a recent work by Charro et al (2008) provides a theoretical treatment of forbidden spontaneous transitions of E2 and M1 types in Ga-like ions including GeII.…”

Section: Introductionmentioning

confidence: 99%

Excitation of GeII in collisions of slow electrons with germanium atoms

Smirnov¹

2014

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

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Inelastic collisions of slow electrons with germanium atoms leading to the population of excited levels of a singly charged germanium ion have been studied experimentally. One hundred GeII excitation cross sections have been measured at an exciting electron energy of 30 eV. Nine optical excitation functions (OEFs) have been recorded in the electron energy range of 0–200 eV. The behavior of excitation cross-sections is discussed for six GeII spectral series.

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Spontaneous radiative decay rates in Ga‐like ions

Cited by 9 publications

References 31 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.

Energy-Crossing and Its Effect on Lifetime of the 4 s ² 4 p ² P _3/2 Level for Highly Charged Ga-Like Ions

Excitation of GeII in collisions of slow electrons with germanium atoms

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Spontaneous radiative decay rates in Ga‐like ions

Cited by 9 publications

References 31 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.

Energy-Crossing and Its Effect on Lifetime of the 4 s 2 4 p 2 P 3/2 Level for Highly Charged Ga-Like Ions

Excitation of GeII in collisions of slow electrons with germanium atoms

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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.

Energy-Crossing and Its Effect on Lifetime of the 4 s ² 4 p ² P _3/2 Level for Highly Charged Ga-Like Ions