Wavelengths, Energy Levels, Lifetimes, and Weighted Oscillator Strengths for the S Viii Spectrum

Pagan, C. J. B.; Cavalcanti, G. H.; Jupén, C; Trigueiros, A. G.

doi:10.1088/0067-0049/196/2/19

Cited by 5 publications

(2 citation statements)

References 52 publications

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“…The method used in the present work is the same as in our previous works (Pagan et al 2011 andRaineri et al 2012) for adjusted Hartree-Fock + Core Polarization calculations.…”

Section: Theorymentioning

confidence: 99%

REVISED AND EXTENDED ANALYSIS OF FIVE TIMES IONIZED XENON, Xe VI

Gallardo

Raineri

Almandos

et al. 2014

ApJS

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A capillary discharge tube was used to record the Xe spectrum in the 400-5500 Å region. A set of 243 lines of the Xe vi spectrum was observed, and 146 of them were classified for the first time. For all known lines, we calculated the weighted oscillator strengths (gf) and weighted transition probabilities (gA) using the configuration interaction in a relativistic Hartree-Fock approach. The energy matrix was calculated using energy parameters adjusted to fit the experimental energy levels. Core polarization effects were taken into account in our calculations. Experimental energy values and calculated lifetimes are also presented for a set of 88 levels. From these levels, 32 were classified for the first time and 33 had their values revised. Our analysis of the 5s5p5d and 5s5p6s configurations was extended in order to clarify discrepancies among previous works.

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“…The method used in the present work is the same as in our previous works (Pagan et al 2011 andRaineri et al 2012) for adjusted Hartree-Fock + Core Polarization calculations.…”

Section: Theorymentioning

confidence: 99%

REVISED AND EXTENDED ANALYSIS OF FIVE TIMES IONIZED XENON, Xe VI

Gallardo

Raineri

Almandos

et al. 2014

ApJS

Self Cite

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“…Multiple spectroscopic techniques have been used, including measurements with the beam-foil technique (Langenberg et al 1980; Yang et al 1980, 2009), lasers (Fawcett et al 1970; Fawcett & Hayes 1973, 1987; Faenov et al 1994), heavy-ion storage rings (Schippers et al 2012) and electron beam ion traps (EBIT) (Lepson & Beiersdorfer 2005; Beiersdorfer et al 2014; Hell et al 2016; Beiersdorfer et al 2017). On the theoretical/computational side, a large body of work has been performed, from systematic calculations of L-shell ions of S (Bhatia & Landi 2003a,b; Karpuškiene˙ et al 2005; Landi & Bathia 2008; Palmeri et al 2008; Luna et al 2009; Martins et al 2009; Fan et al 2009; Liang et al 2011; Pagan et al 2011; Elabidi et al 2012; Li et al 2013; Hell et al 2016) to isoelectronic sequence of various L-shell ions (Witthoeft et al 2007; Jönsson et al 2011; Liang et al 2012; Rynkunb et al 2012; Jönsson et al 2014; Rynkunb et al 2014; Nazé et al 2014; Wang et al 2014, 2015, 2017); see Fan et al (2009) and references therein for a short account of other calculations.…”

Section: Introductionmentioning

confidence: 99%

Relativistic MR-MP Energy Levels for L-shell Ions of Sulfur and Argon

Santana

Lopez-Dauphin

Butler

et al. 2018

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Calculated level energies for valence and K-vacancy states are provided for the ion series S VII - S XIV and Ar IX - Ar XVI. The calculations were performed with the relativistic Multi-Reference Mxller-Plesset Perturbation Theory method (MR-MP). The data set includes all the level energies with configurations 1s22(s, p)q, 1s22(s, p)q−1nl, 1s12(s, p)q+1, 1s12(s, p)qnl, 2(s, p)q+2 and 2(s, p)q+1nl, where 1 ≤ q ≤ 8, n ≤ 5 and l ≤ 3. We have compared our results with data from the National Institute of Standards and Technology (NIST) on-line database and with previous calculations. The average deviation of valence level energies ranges from 0.16 eV in Ne-like ions to 0.01 eV in Li-like ions, showing that the present MR-MP valence level energies are highly accurate. In the case of K-vacancy states, the deviation is generally below 0.3 eV for Li-like S XIV and Ar XVI. The deviation for K-vacancy energies in other L-shell ions (Be-, B-, C-, N- and O-like Ar ions) is higher but likely because the NIST-recommended values have a higher uncertainty. The data set includes many n = 4 and n = 5 valence and K-vacancy levels in L-shell ions of S and Ar not previously reported. The data can be used for line identification and modeling of L-shell ions of S and Ar in astrophysical and laboratory-generated plasmas, and as energy references in the absence of more accurate laboratory measurements.

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Division B Commission 14 Working Group: Atomic Data

Nave¹,

Nahar²,

Zhao³

2015

Proc. IAU

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This report summarizes laboratory measurements of atomic wavelengths, energy levels, hyperfine and isotope structure, energy level lifetimes, and oscillator strengths. Theoretical calculations of lifetimes and oscillator strengths are also included. The bibliography is limited to species of astrophysical interest. Compilations of atomic data and internet databases are also included. Papers are listed in the bibliography in alphabetical order, with a reference number in the text.

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Wavelengths, Energy Levels, Lifetimes, and Weighted Oscillator Strengths for the S Viii Spectrum

Cited by 5 publications

References 52 publications

REVISED AND EXTENDED ANALYSIS OF FIVE TIMES IONIZED XENON, Xe VI

REVISED AND EXTENDED ANALYSIS OF FIVE TIMES IONIZED XENON, Xe VI

Relativistic MR-MP Energy Levels for L-shell Ions of Sulfur and Argon

Division B Commission 14 Working Group: Atomic Data

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