Astronomy and Astrophysics – Astrophysics
Scientific paper
May 1999
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999a%26a...345..663r&link_type=abstract
Astronomy and Astrophysics, v.345, p.663-668 (1999)
Astronomy and Astrophysics
Astrophysics
5
Sun: Chromosphere, Atomic Data
Scientific paper
We present new cross sections and thermally averaged excitation rate coefficients for proton impact excitation of the 1s(2) 2s(2) 2p(2) (3) P fine-structure transitions for ions in the carbon isoelectronic sequence. These data have been calculated using a close-coupled impact parameter method that incorporates the effects of higher lying levels of the triplet 2s2p(3) configuration. We find that the inclusion of these additional states leads to significant reductions in excitation rates for high-Z ions.
Foster-Woods V. J.
Keenan Francis P.
Reid H. G. R.
Ryans S. I. R.
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