Distorted wave photoionization cross sections for use in NLTE model atmospheres: Ni-Ni10+

S. P. Preval, N. R. Badnell

Research output: Contribution to journalArticle

Abstract

Synopsis The Opacity Project is a highly successful venture in which energy levels, oscillator strengths, and photoionization cross sections were calculated for astrophysically important elements up to iron. However, metals heavier than iron are being discovered in stellar atmospheres. The photoionization cross sections for elements and ions not covered by the Opacity Project are usually approximated with hydrogenic formulae. We present a series of valence and inner-shell distorted wave photoioniza-tion cross section calculations for use in model atmosphere calculations covering Ni-Ni10+. We discuss current progress, and future work.

LanguageEnglish
Article number022008
Number of pages1
JournalJournal of Physics: Conference Series
Volume875
Issue number3
DOIs
Publication statusPublished - 18 Aug 2017

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photoionization
opacity
atmospheres
cross sections
iron
stellar atmospheres
heavy metals
oscillator strengths
coverings
energy levels
valence
ions

Keywords

  • Opacity Project
  • photoionization
  • atomic data
  • metals

Cite this

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Distorted wave photoionization cross sections for use in NLTE model atmospheres : Ni-Ni10+. / Preval, S. P.; Badnell, N. R.

In: Journal of Physics: Conference Series, Vol. 875, No. 3, 022008, 18.08.2017.

Research output: Contribution to journalArticle

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AU - Preval, S. P.

AU - Badnell, N. R.

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AB - Synopsis The Opacity Project is a highly successful venture in which energy levels, oscillator strengths, and photoionization cross sections were calculated for astrophysically important elements up to iron. However, metals heavier than iron are being discovered in stellar atmospheres. The photoionization cross sections for elements and ions not covered by the Opacity Project are usually approximated with hydrogenic formulae. We present a series of valence and inner-shell distorted wave photoioniza-tion cross section calculations for use in model atmosphere calculations covering Ni-Ni10+. We discuss current progress, and future work.

KW - Opacity Project

KW - photoionization

KW - atomic data

KW - metals

U2 - 10.1088/1742-6596/875/3/022008

DO - 10.1088/1742-6596/875/3/022008

M3 - Article

VL - 875

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JF - Journal of Physics: Conference Series

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