https://doi.org/10.1140/epjd/e2002-00116-1
Level lifetimes in 3p and 3d configurations of Fe XII
1
Institut de Physique Nucléaire, Atomique et de Spectroscopie (IPNAS),
Université de Liège,
Sart Tilman Bâtiment 15, 4000 Liège, Belgium
2
Astrophysique et Spectroscopie, Université de Mons-Hainaut, 7000 Mons, Belgium
3
Ruhr-Universität Bochum, 44780 Bochum, Germany
4
Observatoire de Paris (UMR 8631
(associée au CNRS et à l'université Paris-VII) et DAEC) ,
92195 Meudon, France
Corresponding author: a traebert@ep3.ruhr-uni-bochum.de
Received:
2
October
2001
Revised:
22
January
2002
Published online:
28
June
2002
Transitions between the five fine-structure levels in the 
ground configuration of Fe XII (P-like) are of interest in astrophysics
and terrestrial plasma diagnostics. The decay rates give rise to
level lifetimes in the millisecond range,
which have been measured recently at a heavy-ion storage ring.
While most of the 
levels are short-lived, two of these
levels have no E1 decay channels and may also have millisecond lifetimes.
We present HFR and MCDF calculations
of the E1, M1, E2 and M2 transition rates between the ,
and levels and compare the lifetime results to
most recent experimental data as well as to other predictions.
PACS: 31.15.-p – Calculations and mathematical techniques in atomic and molecular physics (excluding electron correlation calculations) / 34.10.+x – General theories and models of atomic and molecular collisions and interactions (including statistical theories, transition state, stochastic and trajectory models, etc.) / 32.30.Jc – Visible and ultraviolet spectra
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag, 2002
