Weighted oscillator strengths and lifetimes for the Si VIII spectrum

Orloski, Renata Villela; Trigueiros, A. G.

doi:10.1016/s0022-4073(00)00049-2

Cited by 7 publications

(3 citation statements)

References 19 publications

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“…However, MR-MP yields an energy of 239.06 eV for the 2s1/222p3/224s1/2 ( J = 3/2) level, relatively close to the first value recommended in the NIST database. The MR-MP results for this level agree well with the previous calculation by Orloski & Trigueiros (2001), where a value of 239.16 eV was reported for the 2 s 2 2 p 2 ( 3 P )4 s 2 P 3/2 level.…”

Section: Resultssupporting

confidence: 91%

“…In the case of the 2 p 4 1 S 0 level in Si IX, previous CI-MBPT (Wang et al 2014) and FAC (Wei et al 2014) calculations yielded values of 101.42 and 104.63 eV, respectively, deviating by −0.2 eV and 3 eV from the value suggested in the NIST database. Previous calculations (Orloski & Trigueiros 2001; Bhatia & Landi 2003; Tayal 2012; Nazé et al 2014; Wang et al 2017) for the 2s2p 4 2 P 1/2 level in Si VIII yielded values that overestimated the NIST recommended values from 0.22 to 4.19 eV.…”

Section: Resultsmentioning

confidence: 75%

“…Many of these atomic parameters have been measured in the laboratory for L-shell Si ions (see Faenov et al (1994); Kramida & Träbert (1995); Vilkas et al (2005); Hell et al (2016) and references in there). Multiple systematic (Behar & Netzer 2002; Gu 2005; Liang et al 2007; Palmeri et al 2008; Karim 2011; Wang et al 2011; Hell et al 2016) and targeted (Orloski & Trigueiros 2001; Wei et al 2010; Tayal 2012; Sossah & Tayal 2015; Wei et al 2014) calculations have complemented the measurements. Atomic data has also been provided by calculations of the isoelectronic sequence of various L-shell ions (Safronova & Shlyaptseva 1996; Jönsson et al 2011; Rynkunb et al 2012; Jönsson et al 2013, 2014; Rynkunb et al 2014; Nazé et al 2014; Wang et al 2014, 2015, 2017).…”

Section: Introductionmentioning

confidence: 99%

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Relativistic MR–MP Energy Levels for L-shell Ions of Silicon

Santana

Lopez-Dauphin

Beiersdörfer³

2018

ApJS

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Level energies are reported for Si V, Si VI, Si VII, Si VIII, Si IX, Si X, Si XI and Si XII. The energies have been calculated with the relativistic Multi-Reference Møller-Plesset Perturbation Theory method and include valence and K-vacancy states with up to 5. The accuracy of the calculated level energies is established by comparison with the recommended data listed in the National Institute of Standards and Technology (NIST) on-line database. The average deviation of valence level energies ranges from 0.20 eV in Si V to 0.04 eV in Si XII. For K-vacancy states, the available values recommended in the NIST database are limited to Si XII and Si XIII. The average energy deviation is below 0.3 eV for K-vacancy states. The extensive and accurate dataset presented here greatly augments the amount of available reference level energies. We expect our data to ease the line identification of L-shell ions of Si in celestial sources and laboratory generated plasmas, and to serve as energy references in the absence of more accurate laboratory measurements.

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