| Issue |
Astron. Astrophys. Suppl. Ser.
Volume 126, Number 1, November II 1997
|
|
|---|---|---|
| Page(s) | 105 - 111 | |
| DOI | https://doi.org/10.1051/aas:1997384 | |
| Published online | 15 November 1997 | |
Atomic data from the IRON Project
XXIV. Electron excitation of Li-like Fe xxiv between
the n = 2 and 
= 2, 3, 4 fine-structure levels
1
Department of Applied Mathematics & Theoretical Physics, The Queen's University of Belfast, Belfast BT7 1NN, UK
2
Département G.D. Cassini, Observatoire de la Côte d'Azur, BP. 4229, 06304 Nice Cedex 4, France
Received:
20
January
1997
Accepted:
3
March
1997
Collision strengths for electron induced transitions in Li-like Fe xxiv
are calculated using a Breit-Pauli R-matrix technique. The target has 15
fine structure states corresponding to 
. Autoionizing resonances
are found to affect 18 of the 39 collision strengths, namely those
for transitions 
where 
The present calculation is carried out only for electrons incident on the
ground state with energies not exceeding 265 Ry. Beyond this we use
the relativistic distorted wave collision strengths of Zhang et al. in order
to complete our results. Thermally averaged collision strengths are computed
and tabulated as functions of 
for transitions out of the
, 
and 
states.
The temperature range considered is 
, Fe xxiv
having its maximum coronal abundance when 
.
Key words: Li-like iron / electron collision / atomic data
© European Southern Observatory (ESO), 1997