| Issue |
A&A
Volume 365, Number 2, January 2001
|
|
|---|---|---|
| Page(s) | 248 - 251 | |
| Section | Catalogs and data | |
| DOI | https://doi.org/10.1051/0004-6361:20000189 | |
| Published online | 15 January 2001 | |
2s-photoionisation of atomic magnesium: Shake processes and Coster-Kronig radiationless decay
1
Rostov State University of Transport Communication, 344038 Rostov-on-Don, Russia
2
Observatoire de la Côte d'Azur, Department G. D. Cassini, BP 4229, 06304 Nice Cedex 4, France
3
Departamento de Física, U.F.C., CP 6030, Fortaleza 60455-760, Ceará, Brazil
D. Petrini
Received:
13
June
2000
Accepted:
20
September
2000
2s-photoionization of magnesium is analyzed for incident energies
ranging up to three times the 2s threshold (96.6 eV). The 3s shake processes
amount to almost 30% of single photoionization. The shake-up
cross section 
exceeds 14% of the single one, and the
conjugate shake-up probability plays an important role in the energy range up
to three times the 2s
threshold.
The 2s2p63s2 Auger and
Coster-Kronig rates are calculated, and the 2s22p53s 1P
exit is found to be favoured (80% of the total decay), giving rise to the
line MgIII 231.73 Å.
Key words: atomic data -atomic processes -line formation
© ESO, 2001
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