Astronomy and Astrophysics – Astrophysics
Scientific paper
Mar 2005
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005a%26a...432.1151a&link_type=abstract
Astronomy and Astrophysics, Volume 432, Issue 3, March IV 2005, pp.1151-1155
Astronomy and Astrophysics
Astrophysics
3
Atomic Data, Atomic Processes
Scientific paper
Energy levels, radiative rates, collision strengths, and effective collision strengths for all transitions up to and including the n = 5 levels of Al XIII have been computed in the jj coupling scheme including relativistic effects. All partial waves with angular momentum J ≤ 60 have been included, and resonances have been resolved in a fine energy grid in the threshold region. Collision strengths are tabulated at energies above thresholds in the range 170.0 ≤ E ≤ 300.0 Ryd, and results for effective collision strengths, obtained after integrating the collision strengths over a Maxwellian distribution of electron velocities, are tabulated over a wide temperature range of 4.4 ≤ log Te ≤ 6.8 K. The importance of including relativistic effects in a calculation is discussed in comparison with the earlier available non-relativistic results.
Tables 2 4 are available only 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/432/1151
Aggarwal Kanti M.
Keenan Francis P.
Rose Steve J.
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