Strathprints Home | Open Access | Browse | Search | User area | Copyright | Help | Library Home | SUPrimo

Atomic data from the IRON project LXIII : Electron-impact excitation of Fe19+ up to n=4

Witthoeft, M. C. and Del Zanna, G. and Badnell, N. R. (2007) Atomic data from the IRON project LXIII : Electron-impact excitation of Fe19+ up to n=4. Astronomy and Astrophysics, 466 (2). pp. 763-770. ISSN 0004-6361

Full text not available in this repository. (Request a copy from the Strathclyde author)

Abstract

We present results for the electron-impact excitation of N-like Fe as part of the RmaX network. R-matrix theory using an intermediatec-oupling frame transformation method is used to obtain level-resolved collision strengths. Separate calculations are performed using different target expansions. The first is a 215 level close-coupling calculation which has the 2s(2) 2p(3), 2s 2p(4), 2p(5), 2s(2) 2p(2) 3l, and 2s 2p3 3l configurations while the second calculation also includes the levels from the 2s(2) 2p(2) 4l configurations for a total of 302 close-coupling levels. The effect of the additional resonant enhancement of the larger calculation is explored and compared with a previous IRON Project report and other, more recent, calculations. As a final comparison, we model an astrophysical plasma using the results of the present calculations and previous work.

Item type: Article
ID code: 31179
Keywords: atomic data, atomic processes, scattering, highly ionized iron, emission lines, FE-XX, ions, transitions, plasmas, Physics
Subjects: Science > Physics
Department: Faculty of Science > Physics
Related URLs:
    Depositing user: Pure Administrator
    Date Deposited: 01 Jul 2011 15:28
    Last modified: 17 Jul 2013 10:29
    URI: http://strathprints.strath.ac.uk/id/eprint/31179

    Actions (login required)

    View Item