Atomic data from the IRON Project. VIII. Electron excitation of the 3d^4^ ^5^D_J_ ground state fine-structure transitions in Ti-like ions V II, CR III, MN IV, Fe V, CO VI and NI VII.
Abstract
Electron excitation collision strengths for the 3d^4^ ^5^D_J-J'_ ground term fine-structure transitions in titanium-like ions V II, Cr III, Mn IV, Fe V, Co VI and Ni VII are calculated using R-matrix techniques. The model target ion includes all 3d^4^ terms, and the low-energy collision strengths are dominated by autoionizing resonances. The collision strength is averaged over a Maxwellian velocity distribution to obtain effective collision strengths as a function of electron temperature. To our knowledge, these are the first published data for these processes.
- Publication:
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Astronomy and Astrophysics Supplement Series
- Pub Date:
- January 1995
- Bibcode:
- 1995A&AS..109..193B
- Keywords:
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- ATOMIC DATA