| Issue |
A&A
Volume 393, Number 3, October III 2002
|
|
|---|---|---|
| Page(s) | 1081 - 1087 | |
| Section | Catalogs and data | |
| DOI | https://doi.org/10.1051/0004-6361:20021101 | |
| Published online | 01 October 2002 | |
L-photoionization of atomic aluminium: production of 
, 
and 
UV lines
1
Rostov State University of Transport Communication, 344038 Rostov–on–Don, Russia e-mail: agk@jeo.ru
2
Observatoire de la Côte d'Azur, CNRS Laboratoire Cassini, BP 4229, 06304 Nice Cedex 4, France
3
Departamento de Física, U.F.C., CP 6030, Fortaleza 60455–760, Ceará, Brazil e-mail: euclimar@fisica.ufc.br
Corresponding author: D. Petrini, petrini@obs-nice.fr
Received:
26
March
2002
Accepted:
3
July
2002
Aluminium atoms undergoing soft X–ray irradiation produce
multiply–ionized ions in excited states through inner–shell photoionization
followed by radiationless transitions, i.e. Auger cascades. Photoionization of
2s–, 2p– and 3s subshells are considered for the 80 eV to 1 keV incident photon energy range.
Photoionization cross sections, shake probabilities and Auger and Coster–Kronig rates
are evaluated in various approximations.
, and UV lines are directly produced
independently of local temperature and
electron density. Monopole shake up/off and conjugate shake up excitations
are important over a large energy interval beyond the L thresholds.
Key words: atomic data / atomic processes / line: formation
© ESO, 2002
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