The Spectrum and Term System of S VII

Author:

Christer Jupén ,Lars Engström

Abstract

The spectrum of six times ionized sulphur, S VII, has been investigated in the wavelength region 200–4000 Å by means of the beam-foil and laser-produced plasma techniques. The analysis comprises 219 lines of which 105 are newly identified. The present work establishes 123 2s22p5 nl energy levels of which 66 are new. The level energies are determined with an internal consistency of better than 20 cm-1. The observed level structure has been investigated by means of parametric calculations. The center-of-gravity ionization energy of the 2s22p5 2P limit has been determined to 2 269 410±60 cm-1. Of the identified 3s-3p and 3p-3d lines 27 are present in the solar coronal spectrum recorded by the SUMER instrument onboard the SOHO satellite. The present work adds 2 new solar identifications and improved wavelengths of some other solar coronal lines.

Publisher

IOP Publishing

Subject

Condensed Matter Physics,Mathematical Physics,Atomic and Molecular Physics, and Optics

Cited by 5 articles. 订阅此论文施引文献 订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献

1. Atomic shells according to ionization energies;Journal of Molecular Modeling;2019-07-26

2. Analysis of the competition between forbidden and hyperfine-induced transitions in Ne-like ions;Physical Review A;2016-03-14

3. CHIANTI – An atomic database for emission lines. Version 8;Astronomy & Astrophysics;2015-10

4. Fine structure collision strengths for S VII lines;Physica Scripta;2012-05-24

5. Weighted oscillator strengths and lifetimes for the S VII spectrum;Journal of Quantitative Spectroscopy and Radiative Transfer;2004-02

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