R-matrix electron-impact excitation data for the Na-like iso-electronic sequence

Guiyun Liang, A.D. Whiteford, N.R. Badnell, UK STFC (Funder)

Research output: Contribution to journalArticle

38 Citations (Scopus)

Abstract

We present results for the outer-shell electron-impact excitation of all Na-like ions from Mg+ to Kr25+ obtained using the intermediate-coupling frame transformation R-matrix approach. For each ion's calculation, the target and close-coupling expansions are both taken to be the 18 LS terms (32 levels) belonging to configurations [1s(2)2s(2)2p(6)]3l, 4l, 5l and 6l (l = 0-5). Effective collision strengths ((sic)s) are presented at temperatures ranging from 2 x 10(2)(q + 1)(2) K to 2 x 10(6)(q + 1)(2) K (where q is the residual charge of ions, i.e. Z - 11). Detailed comparisons for the (sic)s are made with the results of previous calculations for several ions, which span the sequence. Furthermore, we examine the iso-electronic trends of both low- and high-temperature effective collision strengths
LanguageEnglish
Pages1263-1269
Number of pages7
JournalAstronomy and Astrophysics
Volume500
Issue number3
DOIs
Publication statusPublished - 4 Jun 2009

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electron impact
electron
matrix
ion
electronics
excitation
ions
collision
collisions
shell
trends
expansion
configurations
temperature
calculation

Keywords

  • atomic data
  • atomic processes
  • plasmas

Cite this

Liang, Guiyun ; Whiteford, A.D. ; Badnell, N.R. ; UK STFC (Funder). / R-matrix electron-impact excitation data for the Na-like iso-electronic sequence. In: Astronomy and Astrophysics. 2009 ; Vol. 500, No. 3. pp. 1263-1269.
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R-matrix electron-impact excitation data for the Na-like iso-electronic sequence. / Liang, Guiyun; Whiteford, A.D.; Badnell, N.R.; UK STFC (Funder).

In: Astronomy and Astrophysics, Vol. 500, No. 3, 04.06.2009, p. 1263-1269.

Research output: Contribution to journalArticle

TY - JOUR

T1 - R-matrix electron-impact excitation data for the Na-like iso-electronic sequence

AU - Liang, Guiyun

AU - Whiteford, A.D.

AU - Badnell, N.R.

AU - UK STFC (Funder)

PY - 2009/6/4

Y1 - 2009/6/4

N2 - We present results for the outer-shell electron-impact excitation of all Na-like ions from Mg+ to Kr25+ obtained using the intermediate-coupling frame transformation R-matrix approach. For each ion's calculation, the target and close-coupling expansions are both taken to be the 18 LS terms (32 levels) belonging to configurations [1s(2)2s(2)2p(6)]3l, 4l, 5l and 6l (l = 0-5). Effective collision strengths ((sic)s) are presented at temperatures ranging from 2 x 10(2)(q + 1)(2) K to 2 x 10(6)(q + 1)(2) K (where q is the residual charge of ions, i.e. Z - 11). Detailed comparisons for the (sic)s are made with the results of previous calculations for several ions, which span the sequence. Furthermore, we examine the iso-electronic trends of both low- and high-temperature effective collision strengths

AB - We present results for the outer-shell electron-impact excitation of all Na-like ions from Mg+ to Kr25+ obtained using the intermediate-coupling frame transformation R-matrix approach. For each ion's calculation, the target and close-coupling expansions are both taken to be the 18 LS terms (32 levels) belonging to configurations [1s(2)2s(2)2p(6)]3l, 4l, 5l and 6l (l = 0-5). Effective collision strengths ((sic)s) are presented at temperatures ranging from 2 x 10(2)(q + 1)(2) K to 2 x 10(6)(q + 1)(2) K (where q is the residual charge of ions, i.e. Z - 11). Detailed comparisons for the (sic)s are made with the results of previous calculations for several ions, which span the sequence. Furthermore, we examine the iso-electronic trends of both low- and high-temperature effective collision strengths

KW - atomic data

KW - atomic processes

KW - plasmas

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JO - Astronomy and Astrophysics

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SN - 0004-6361

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