4d9 → 4d85p transitions in Cd IV, Sn VI, and Sb VII and the resonance lines of Sn V and Sb VI

Joshi, Y N; Kleef, Th. A. M. van

doi:10.1139/p77-099

Cited by 29 publications

(9 citation statements)

References 3 publications

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“…Cd is predicted to be highly enriched by s-process nucleosynthesis models (e.g., Cristallo et al 2015). Cd 3+ has a 4d 9 ground configuration with two levels separated by 5812.6 cm −1 (Joshi & van Kleef 1977), corresponding to a wavelength of 1.7204 µm. Its IP range is 37.5-51.0 eV, similar to Rb 3+ and O 2+ , and thus Cd 3+ should be the most abundant Cd ion in all but low-excitation PNe.…”

Section: Identification Of [Rbmentioning

confidence: 99%

Discovery of Rubidium, Cadmium, and Germanium Emission Lines in the Near-Infrared Spectra of Planetary Nebulae*

Sterling

Dinerstein

Kaplan

et al. 2016

ApJL

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ABSTRACT/H + abundances found from this line and the 5759.55Å feature in NGC7027. Elemental Rb, Cd, and Ge abundances are derived with ionization corrections based on similarities in ionization potential ranges between the detected ions and O and Ne ionization states. Our analysis indicates abundances 2-4 times solar for Rb and Cd in both nebulae. Ge is subsolar in NGC7027, but its abundance is uncertain due to the large and uncertain ionization correction. The general consistency of the measured relative s-process enrichments with predictions from models appropriate for these PNe (2.0-2.5M e , [Fe/H]=−0.37) demonstrates the potential of using PN compositions to test s-process nucleosynthesis models. atomic data -infrared: general -nuclear reactions, nucleosynthesis, abundances -planetary nebulae: generalstars: AGB and post-AGB

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Section: Identification Of [Rbmentioning

confidence: 99%

Discovery of Rubidium, Cadmium, and Germanium Emission Lines in the Near-Infrared Spectra of Planetary Nebulae*

Sterling

Dinerstein

Kaplan

et al. 2016

ApJL

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“…In the PdI sequence (ground state 4d' 'So), 4d' 4d 4fand 4d Sp transitions have been assigned in Sn v [10,11], Sb vI, Te VII [12], and I vu [13]. In addition, the 4d 6p levels of Sb vt and Te vII and 4d 5f levels of I VIu were deduced in these studies.…”

Section: Introductionmentioning

confidence: 95%

Statistics and characteristics of xuv transition arrays from laser-produced plasmas of the elements tin through iodine

Svendsen

O’Sullivan

1994

Phys. Rev. A

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Spectra of laser-produced plasmas of the elements from tin to iodine contain weak bands of quasicon-0 tinuum overlaid by weak emission lines in the 70 -120-A region. Multiconfiguration-Dirac-Fock calculations show that these features are consistent with theoretical spectra for 4d 4d -'(Sf +6p) transitions in a number of adjacent ion stages which are predicted to produce unresolved transition arrays (UTA) in this spectral region. Moreover, the calculations predict a gradual decrease of 4d 5f osc-illator strength with increasing ionization up to the eleventh spectrum where ggf(4d 5f) =0.-However, inclusion of configuration interaction effects between the 4d'nf levels showed that 4d'4f and 4d~5f mixing shifts this minimum to the thirteenth spectrum. The theoretical data were then parametrized within the UTA formalism and the different order moments corresponding to weighted mean energy, variance, and skewness coefficient evaluated. PACS number(s): 32.70.n, 31.20.d, 32.30.Jc gress [16]. In this work we show that the weak emission bands observed in the vuv at A. &100 A are consistent with unresolved transition arrays of this type.

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“…The resonance 4d 9 -4d 8 5p transitions and the transitions between first excited configurations 4d 8 5s and 4d 8 5p were studied in [1,2]. All levels of these configurations were established.…”

Section: Introductionmentioning

confidence: 99%

Spectrum of Sn5+ in the Region 500–1300 Å

Ryabtsev¹,

Kildiyarova²,

Kononov³

2017

Atoms

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Abstract:The spectrum of tin, excited in a vacuum spark, was recorded in the region 500-1131 Å on a 6.65-m normal incidence spectrograph. The transitions between 4d 8 5s, 4d 8 6s, 4d 8 5p and 4d 8 5d excited configurations in Sn VI were studied. More than 500 lines of the 4d 8 5p-4d 8 5d and 4d 8 5p-4d 8 6s were identified with the aid of the Cowan code calculations. 67 energy levels (out of 70 possible levels of the 4d 8 5d configuration) and all but two 4d 8 6s levels were found. The wavelength of the 4d 8 5s-4d 8 5p transitions in the region 839-1131 Å were re-measured and supplemented by Sn VI lines in the region 1131-1300 Å measured previously by Srivastava et al. (1977) for optimisation of the energy level values. The SnVI line list in the region 500-1300 Å contains now 741 lines with calculated transition probabilities.

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4d⁹ → 4d⁸5p transitions in Cd IV, Sn VI, and Sb VII and the resonance lines of Sn V and Sb VI

Cited by 29 publications

References 3 publications

Discovery of Rubidium, Cadmium, and Germanium Emission Lines in the Near-Infrared Spectra of Planetary Nebulae*

Discovery of Rubidium, Cadmium, and Germanium Emission Lines in the Near-Infrared Spectra of Planetary Nebulae*

Statistics and characteristics of xuv transition arrays from laser-produced plasmas of the elements tin through iodine

Spectrum of Sn5+ in the Region 500–1300 Å

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