Study of the 4s4p4d and the 4s4p5s configurations of Kr VI

Pagan, C. J. B.; Almandos, J. G. Reyna; Gallardo, M.; Pettersson, Sven-Göran; Cavalcanti, G. H.; Trigueiros, A. G.

doi:10.1364/josab.12.000203

Cited by 8 publications

(4 citation statements)

References 26 publications

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“…Configurations equivalent to those analysed in this paper were also studied by Raineri et al (1992) in the n = 3 study of five-ionized argon (Ar VI) and by Pagan et al (1995) in the n = 4 study of five times ionized krypton (Kr…”

Section: Introductionmentioning

confidence: 94%

Spectroscopic analysis of the configurations 5s5p5d, 5p³and 5s5p6s of Xe VI

Sarmiento¹,

Almandos²,

Raineri³

et al. 1999

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

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The spectrum of five times ionized xenon (Xe VI) has been observed in the 270-7000 Å wavelength range. We proposed 18 new energy level values of the 5s5p5d configuration, all the energy level values for the 5p3 configuration and three energy level values of the 5s5p6s configuration. The observed configurations were theoretically interpreted by means of Hartree-Fock relativistic (HFR) calculations and least-squares fit of the energy parameters to the observed levels. The parameter values are compared with results from HFR calculations.

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Section: Introductionmentioning

confidence: 94%

Spectroscopic analysis of the configurations 5s5p5d, 5p³and 5s5p6s of Xe VI

Sarmiento¹,

Almandos²,

Raineri³

et al. 1999

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

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“…The model atoms used for this analysis were developed in the framework of the German Astrophysical Virtual Observatory 5 project and are provided within the Tübingen Model-Atom Database (TMAD 6 ). The Kr vi model ion was constructed using NIST level energies that were compiled from Pagan et al (1995) and references therein. Oscillator strengths f were taken from Pagan et al (1996).…”

Section: Krypton and Xenon Abundance Analysismentioning

confidence: 99%

First Detection of Krypton and Xenon in a White Dwarf

Werner

Rauch

Ringat

et al. 2012

ApJ

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We report on the first detection of the noble gases krypton (Z = 36) and xenon (54) in a white dwarf. About 20 Kr vi-vii and Xe vi-vii lines were discovered in the ultraviolet spectrum of the hot DO-type white dwarf RE 0503−289. The observations, performed with the Far Ultraviolet Spectroscopic Explorer, also reveal highly ionized photospheric lines from other trans-iron group elements, namely Ga (31), Ge (32), As (33), Se (34), Mo (42), Sn (50), Te (52), and I (53), from which gallium and molybdenum are new discoveries in white dwarfs, too. For Kr and Xe, we performed an NLTE analysis and derived mass fractions of log Kr = −4.3 ± 0.5 and log Xe = −4.2 ± 0.6, corresponding to an enrichment by factors of 450 and 3800, respectively, relative to the Sun. The origin of the large overabundances is unclear. We discuss the roles of neutron-capture nucleosynthesis in the precursor star and radiation-driven diffusion. It is possible that diffusion is insignificant and that the observed metal abundances constrain the evolutionary history of the star. Its hydrogen deficiency may be the consequence of a late helium-shell flash or a binary white dwarf merger.

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“…The study involved the 4s4p4d and the 4s4p5s configurations resulting in 109 new line classifications and 22 new energy levels [54]. This analysis also showed the strong interaction between the 4s4p4d configurations and the other n = 4 complex configurations.…”

Section: Kr VImentioning

confidence: 90%

Spectral Analysis of Moderately Charged Rare-Gas Atoms

Almandos

Raineri

2017

Atoms

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This article presents a review concerning the spectral analysis of several ions of neon, argon, krypton and xenon, with impact on laser studies and astrophysics that were mainly carried out in our collaborative groups between Argentina and Brazil during many years. The spectra were recorded from the vacuum ultraviolet to infrared regions using pulsed discharges. Semi-empirical approaches with relativistic Hartree-Fock and Dirac-Fock calculations were also included in these investigations. The spectral analysis produced new classified lines and energy levels. Lifetimes and oscillator strengths were also calculated.

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Study of the 4s4p4d and the 4s4p5s configurations of Kr VI

Cited by 8 publications

References 26 publications

Spectroscopic analysis of the configurations 5s5p5d, 5p³and 5s5p6s of Xe VI

Spectroscopic analysis of the configurations 5s5p5d, 5p³and 5s5p6s of Xe VI

First Detection of Krypton and Xenon in a White Dwarf

Spectral Analysis of Moderately Charged Rare-Gas Atoms

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Study of the 4s4p4d and the 4s4p5s configurations of Kr VI

Cited by 8 publications

References 26 publications

Spectroscopic analysis of the configurations 5s5p5d, 5p3and 5s5p6s of Xe VI

Spectroscopic analysis of the configurations 5s5p5d, 5p3and 5s5p6s of Xe VI

First Detection of Krypton and Xenon in a White Dwarf

Spectral Analysis of Moderately Charged Rare-Gas Atoms

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Spectroscopic analysis of the configurations 5s5p5d, 5p³and 5s5p6s of Xe VI

Spectroscopic analysis of the configurations 5s5p5d, 5p³and 5s5p6s of Xe VI