J/A+A/433/745 FeXX energy levels + transition probabilities (Jonauskas+, 2005)
Energy levels and transition probabilities for nitrogen-like Fe XX.
Jonauskas V., Bogdanovich P., Keenan F.P., Foord M. E., Heeter R.F.,
Rose S.J., Ferland G.J., Kisielius R., van Hoof P.A.M., Norrington P.H.
<Astron. Astrophys. 433, 745 (2005)>
=2005A&A...433..745J 2005A&A...433..745J
ADC_Keywords: Atomic physics
Keywords: atomic data
Description:
Energy levels and the corresponding transition probabilities as well
as oscillator strengths and line strengths for allowed (E1) and
forbidden (E2, M1) transitions among the lowest 700 levels of
nitrogen-like Fe XX are presented. Calculations were performed using
the multiconfigurational Dirac-Fock GRASP code.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 99 700 Multiconfiguration Dirac-Fock (MCDF) calculated
energy levels relative to the ground energy of
Fe XX with spectroscopic identifications
table8.dat 66 12811 E1-type transitions
table9.dat 66 25925 E2-type transitions
table10.dat 58 6534 M1-type transitions
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See also:
J/A+A/385/716 : N-like and O-like Breit-Pauli energy levels (Tachiev+, 2002)
J/A+A/424/363 : Fe XIX transition probabilities (Jonauskas+, 2004)
J/A+A/377/361 : Fe II transition probabilities and loggf (Pickering+, 2001)
J/A+AS/120/361 : IRON Project. XIX. Fe II radiative transitions (Quinet+ 1996)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 3 I3 --- Index Index number
5- 20 A16 --- Conf Configuration
22- 23 A2 --- LS LS state
25- 27 F3.1 --- J J-value arising from each LS state
29- 39 F11.0 cm-1 E Energy
41- 99 A59 --- Comp Composition (1)
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Note (1): Leading percentage compositions of levels which contributions
exceed 10% are presented in that column.
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Byte-by-byte Description of file: table8.dat table9.dat table10.dat
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Bytes Format Units Label Explanations
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3- 5 I3 --- Index2 Index of lower level
8- 10 I3 --- Index1 Index of upper level
15- 22 E8.3 0.1nm E Transition energy
27- 34 E8.3 s-1 A Radiative transition probability
39- 46 E8.3 --- f Absorption oscillator strength
51- 58 E8.3 --- S Transition strength (length form),
in atomic units
62- 66 F5.2 --- vel/len ? Ratio between velocity and length forms of
transition operator (not in table10.dat)
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Acknowledgements: Valdas Jonauskas, v.jonauskas(at)qub.ac.uk
(End) Patricia Vannier [CDS] 16-Feb-2005