Atomic data from the IRON Project. XIV. Electron impact excitation of the Fe XIV fine-structure transition ^2^P^o^_1/2_-^2^P^o^_3/2_
Abstract
We calculate collision strengths and collision rates for electron excitation of the ^2^P^o^_1/2_-^2^P^o^_3/2_ ground term fine-structure transition in Fe xiv, the coronal green line at 5303A. The collision strength for the green line is found to be strongly enhanced by resonances for the first 4 Rydberg above the excitation threshold, and as a result the collision rates are found to be significantly larger than other recently published results, even at coronal temperatures. The calculations are carried out using the R-matrix formulation of the close-coupling approximation.
- Publication:
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Astronomy and Astrophysics
- Pub Date:
- May 1996
- Bibcode:
- 1996A&A...309..677S
- Keywords:
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- ATOMIC DATA;
- SUN: CORONA