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

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

May 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007a%26a...466..763w&link_type=abstract

Astronomy and Astrophysics, Volume 466, Issue 2, May I 2007, pp.763-770

Astronomy and Astrophysics

Astrophysics

5

Atomic Data, Atomic Processes, Scattering

Scientific paper

We present results for the electron-impact excitation of N-like Fe as part of the RmaX network. R-matrix theory using an intermediate-coupling 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 2s2 2p^3, 2s 2p^4, 2p^5, 2s2 2p2 3l, and 2s 2p3 3l configurations while the second calculation also includes the levels from the 2s2 2p2 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.
The full list of energy levels (Table 2) is available in electronic form at the CDS via anonymous ftp to cdsarc.u-strasbg.fr (130.79.128.5) or via http://cdsweb.u-strasbg.fr/cgi-bin/qcat?J/A+A/466/763

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