J/ApJS/156/105 Transitions in L-shell ions of Fe and Ni (Gu+, 2005)
Wavelengths of 2l-->3l' transitions in L-shell ions of iron and nickel: a
combined configuration interaction and many-body perturbation theory approach.
Gu M.F.
<Astrophys. J. Suppl. Ser., 156, 105-110 (2005)>
=2005ApJS..156..105G 2005ApJS..156..105G
ADC_Keywords: Atomic physics
Keywords: atomic data - atomic processes
Abstract:
Using a combined configuration interaction and many-body perturbation
theory approach, we calculate the level energies of 1s22lq and
1s22lq-13l' (1≤q≤8) complexes in iron and nickel ions.
Comparison of 1s22lq energies with experimental results shows that
the calculation is accurate to within ∼0.15eV for these levels. The
accuracy of 1s22lq-13l' energies can be slightly worse, at ∼0.5eV.
The theoretical wavelengths of 2->3 transitions of iron ions are
compared with the published experimental measurements, and
discrepancies are found to be mostly within ±10mÅ. Similar
accuracy is expected for wavelengths of nickel ions. Such accuracy is
a significant improvement over that obtainable with standard
configuration interaction methods. A complete table of 2l->3l'
transition wavelengths of all L-shell ions of iron and nickel is
presented.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table3.dat 56 1063 Combined CI and MBPT energies of 1s22lq and
1s22lq-13l' states for L-shell Fe and Ni ions
table4.dat 35 879 Combined CI and MBPT wavelength of 2l->3l'
transitions of L-shell Fe and Ni ions
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Byte-by-byte Description of file: table3.dat
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Bytes Format Units Label Explanations
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1- 2 I2 --- Ne Number of Electrons
4- 6 I3 --- Index Index
8 I1 --- P Parity (1)
10- 11 I2 --- 2J Total Angular Momentum 2J
13- 24 A12 --- Config Configuration (2)
26- 40 E15.9 eV E(Fe) Energy for Iron (3)
42- 56 E15.9 eV E(Ni) Energy for Nickel (3)
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Note (1): Parity, defined as follows:
0 = even;
1 = odd.
Note (2): Closed shells are omitted in the configuration labels.
Note (3): Energies are relative to the ground states, except for the ground
states themselves, for which the absolute energies are given.
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Byte-by-byte Description of file: table4.dat
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Bytes Format Units Label Explanations
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1- 2 I2 --- Z [26,28] Nuclear Charge
4- 5 I2 --- Ne Number of Electrons
7- 9 I3 --- LIndex Lower Level Index
11- 13 I3 --- UIndex Upper Level Index
15- 21 F7.4 0.1nm Lambda Wavelength
23- 29 F7.4 --- Int Relative Intensity (1)
31- 34 A4 --- Label Label (2)
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Note (1): Intensity relative to the strongest line in each charge state.
Note (2): Labels of Brown et al. (1998ApJ...502.1015B 1998ApJ...502.1015B, 2002ApJS..140..589B 2002ApJS..140..589B).
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History:
From electronic version of the journal
(End) Greg Schwarz [AAS], Marianne Brouty [CDS] 02-Jun-2005