### Abstract

We present results for the electron-impact excitation of F-like ions from Ne+ to Kr27+ using an R-matrix approach where the intermediate-coupling frame transformation method has been used to obtain level-resolved collision strengths. For each calculation, the target has been expanded using 87 terms ( 195 levels) with the following configuration basis: 2s(2) 2p(5), 2s 2p(6), 2s2 2p(4) 3l, 2s 2p(5) 3l and 2s(2) 2p(4) 4l. Comparisons are made with previous R-matrix calculations for the fine-structure transition over the whole sequence and other, more extensive, calculations on Ne+ and Fe17+. We examine iso-electronic trends of both low-and high-temperature effective collision strengths. This complete, self-consistent set of radiative and collision data is archived in multiple databases.

Language | English |
---|---|

Pages | 2969-2993 |

Number of pages | 25 |

Journal | Journal of Physics B: Atomic, Molecular and Optical Physics |

Volume | 40 |

Issue number | 15 |

DOIs | |

Publication status | Published - 14 Aug 2007 |

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### Keywords

- fluorine like ions
- fine structure transition
- iron project
- atomic data
- ionization
- NI

### Cite this

*Journal of Physics B: Atomic, Molecular and Optical Physics*,

*40*(15), 2969-2993. https://doi.org/10.1088/0953-4075/40/15/001

}

*Journal of Physics B: Atomic, Molecular and Optical Physics*, vol. 40, no. 15, pp. 2969-2993. https://doi.org/10.1088/0953-4075/40/15/001

**R-matrix electron-impact excitation calculations along the F-like iso-electronic sequence.** / Witthoeft, M. C.; Whiteford, A. D.; Badnell, N. R.

Research output: Contribution to journal › Article

TY - JOUR

T1 - R-matrix electron-impact excitation calculations along the F-like iso-electronic sequence

AU - Witthoeft, M. C.

AU - Whiteford, A. D.

AU - Badnell, N. R.

PY - 2007/8/14

Y1 - 2007/8/14

N2 - We present results for the electron-impact excitation of F-like ions from Ne+ to Kr27+ using an R-matrix approach where the intermediate-coupling frame transformation method has been used to obtain level-resolved collision strengths. For each calculation, the target has been expanded using 87 terms ( 195 levels) with the following configuration basis: 2s(2) 2p(5), 2s 2p(6), 2s2 2p(4) 3l, 2s 2p(5) 3l and 2s(2) 2p(4) 4l. Comparisons are made with previous R-matrix calculations for the fine-structure transition over the whole sequence and other, more extensive, calculations on Ne+ and Fe17+. We examine iso-electronic trends of both low-and high-temperature effective collision strengths. This complete, self-consistent set of radiative and collision data is archived in multiple databases.

AB - We present results for the electron-impact excitation of F-like ions from Ne+ to Kr27+ using an R-matrix approach where the intermediate-coupling frame transformation method has been used to obtain level-resolved collision strengths. For each calculation, the target has been expanded using 87 terms ( 195 levels) with the following configuration basis: 2s(2) 2p(5), 2s 2p(6), 2s2 2p(4) 3l, 2s 2p(5) 3l and 2s(2) 2p(4) 4l. Comparisons are made with previous R-matrix calculations for the fine-structure transition over the whole sequence and other, more extensive, calculations on Ne+ and Fe17+. We examine iso-electronic trends of both low-and high-temperature effective collision strengths. This complete, self-consistent set of radiative and collision data is archived in multiple databases.

KW - fluorine like ions

KW - fine structure transition

KW - iron project

KW - atomic data

KW - ionization

KW - NI

U2 - 10.1088/0953-4075/40/15/001

DO - 10.1088/0953-4075/40/15/001

M3 - Article

VL - 40

SP - 2969

EP - 2993

JO - Journal of Physics B: Atomic, Molecular and Optical Physics

T2 - Journal of Physics B: Atomic, Molecular and Optical Physics

JF - Journal of Physics B: Atomic, Molecular and Optical Physics

SN - 0953-4075

IS - 15

ER -