R-matrix electron-impact excitation data for astrophysically abundant sulphur ions

G. Y. Liang, N. R. Badnell, G. Zhao, J. Y. Zhong, F. L. Wang

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

We present results for the electron-impact excitation of highly-charged sulphur ions (S8+–S11+) obtained using the intermediate-coupling frame transformation R-matrix approach. A detailed comparison of the target structure has been made for the four ions to assess the uncertainty on collision strengths from the target structure. Effective collision strengths (Υs) are presented at temperatures ranging from 2 × 102(z + 1)2 K to 2 × 106(z + 1)2 K (where z is the residual charge of ions). Detailed comparisons for the Υs are made with the results of previous calculations for these ions, which will pose insight on the uncertainty in their usage by astrophysical and fusion modelling codes.
LanguageEnglish
Article numberA87
Number of pages13
JournalAstronomy and Astrophysics
Volume533
DOIs
Publication statusPublished - Sep 2011

Fingerprint

electron impact
sulfur
electron
matrix
ion
excitation
ions
collision
collisions
astrophysics
fusion
modeling
temperature
comparison

Keywords

  • Boron like ions
  • spectral line intensities
  • plasmas
  • rate coefficients
  • iron project
  • S-XII
  • solar active region
  • transitions
  • emission-lines
  • effective collision strengths
  • atomic processes
  • atomic data

Cite this

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abstract = "We present results for the electron-impact excitation of highly-charged sulphur ions (S8+–S11+) obtained using the intermediate-coupling frame transformation R-matrix approach. A detailed comparison of the target structure has been made for the four ions to assess the uncertainty on collision strengths from the target structure. Effective collision strengths (Υs) are presented at temperatures ranging from 2 × 102(z + 1)2 K to 2 × 106(z + 1)2 K (where z is the residual charge of ions). Detailed comparisons for the Υs are made with the results of previous calculations for these ions, which will pose insight on the uncertainty in their usage by astrophysical and fusion modelling codes.",
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R-matrix electron-impact excitation data for astrophysically abundant sulphur ions. / Liang, G. Y.; Badnell, N. R.; Zhao, G.; Zhong, J. Y.; Wang, F. L.

In: Astronomy and Astrophysics, Vol. 533, A87, 09.2011.

Research output: Contribution to journalArticle

TY - JOUR

T1 - R-matrix electron-impact excitation data for astrophysically abundant sulphur ions

AU - Liang, G. Y.

AU - Badnell, N. R.

AU - Zhao, G.

AU - Zhong, J. Y.

AU - Wang, F. L.

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KW - Boron like ions

KW - spectral line intensities

KW - plasmas

KW - rate coefficients

KW - iron project

KW - S-XII

KW - solar active region

KW - transitions

KW - emission-lines

KW - effective collision strengths

KW - atomic processes

KW - atomic data

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