J/A+A/585/A26 Silicon isoelectronic sequence data (Jonsson+, 2016)
Accurate multiconfiguration calculations of energy levels, lifetimes, and
transition rates for the silicon isoelectronic sequence:
Ti IX - Ge XIX, Sr XXV, Zr XXVII, Mo XXIX.
Jonsson P., Radziute L., Gaigalas G., Godefroid M.R., Marques J.P.,
Brage T., Froese Fischer C., Grant I.P.
<Astron. Astrophys. 585, A26 (2016)>
=2016A&A...585A..26J 2016A&A...585A..26J (SIMBAD/NED BibCode)
ADC_Keywords: Atomic physics
Keywords: atomic data - atomic processes
Abstract:
Multiconfiguration Dirac-Hartree-Fock (MCDHF) calculations and
relativistic configuration interaction (RCI) calculations are
performed for states of the 3s23p2, 3s3p3 and 3s23p3d
configurations in the Si-like ions Ti IX - Ge XIX, Sr XXV, Zr XXVII
and Mo XXIX. Valence and core-valence electron correlation effects are
accounted for through large configuration state function expansions.
Calculated energy levels are compared with data from other
calculations and with experimental data from the reference databases.
Lifetime and transition rates along with uncertainty estimations are
given for all ions. Energies from the calculations are in excellent
agreement with observations and computed wavelength are almost of
spectroscopic accuracy, aiding line identification in spectra.
Description:
Calculations were performed for the five states belonging to the
3s23p2 even configuration and the 22 states belonging to the
3s3p3 and 3s23p3d odd configurations. The calculations were made
by parity, meaning that the even and odd states were determined in
separate calculations in the EOL scheme.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table2.dat 70 378 Calculated and observed excitation energies in cm-1
table3.dat 76 350 Calculated lifetime in s
table5.dat 146 1130 Calculated transition data
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See also:
J/A+AS/105/245 : Stark broadening Al XI and Si XII (Dimitrijevic+ 1994)
J/A+AS/129/155 : Si XI + Si XIII lines Stark broadening (Dimitrijevic+ 1998)
J/ApJS/121/591 : Oscillator Strengths for Si VI (Coutinho+, 1999)
J/A+A/423/397 : Stark broadening of Si V (Ben Nessib+, 2004)
J/A+A/508/1527 : Si II Radiative transition rates (Bautista+, 2009)
J/MNRAS/387/871 : Si VI atomic data and broadening effect (Hamdi+, 2008)
J/A+A/522/A103 : Si XI K-shell energy levels and radiative rates (Wei+, 2010)
J/A+A/566/A105 : Si IX K-shell energy levels and transitions (Wei+, 2014)
J/A+A/559/A100 : Boron isoelectronic sequence data (Jonsson+, 2013)
Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
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1- 8 A8 --- Ion Ion
10 I1 --- J J quantum number
12 A1 --- P [±] parity
14- 30 A17 --- State quantum label of the state
32 A1 --- n_State [ab]
34- 40 I7 cm-1 E(RCI) Excitation energies from RCI calc.
this work
42- 46 I5 cm-1 DE(RCI) ? Difference between observed and RCI
excitation energies
48- 53 I6 cm-1 E(MR-MP) ? Excitation energies from MR-MP calc (1)
55- 59 I5 cm-1 DE(MR-MP) ? Difference between observed and MR-MP
excitation energies
61- 69 F9.1 cm-1 E(obs) ? Observed excitation energies (2)
70 A1 --- n_E(obs) Note on E(obs) (3)
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Note (1): by Vilkas and Ishikawa Vilkas M.J. & Ishikawa, Y.,
2004a, J. Phys. B: At. Mol. Opt. Phys., 37, 1803,
Note (2): from the NIST database Kramida A., Ralchenko Yu., Reader J. and
NIST ASD Team 2012 NIST Atomic Spectra Database (ver. 5.0) and from
Del Zanna, G. 2011A&A...533A..12D 2011A&A...533A..12D (Fe XIII) and from
Del Zanna, G. 2013A&A...558A..73D 2013A&A...558A..73D (Ni XV)
Note (3): Note as follows:
] = value were obtained from interpolation.
? = classified as uncertain in NIST database
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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- 8 A8 --- Ion Ion
13 I1 --- J J quantum number
15 A1 --- P [±] parity
17- 33 A17 --- State Quantum label of the state
35 A1 --- n_State [ab]
40- 49 E10.5 s Tl Lifetime calculated in length form
54- 63 E10.5 s Tv Lifetime calculated in velocity form
68- 76 E9.4 s TMCHF-BP ? Lifetime in s from MCHF-BP calculations from
Froese Fischer C., Tachiev G. & Irimia A.,
2006, At. Data and Nucl. Data Tables, 92, 607
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Byte-by-byte Description of file: table5.dat
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Bytes Format Units Label Explanations
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1- 8 A8 --- Ion Ion
14 I1 --- Ju J quantum number upper state
16 A1 --- Pu [±] parity upper state
18- 34 A17 --- ustate Quantum label of the upper state
36 A1 --- n_ustate [ab]
44 I1 --- Jl J quantum number lower state
46 A1 --- Pl [±] parity lower state
48- 64 A17 --- lstate Quantum label of the lower state
70- 71 A2 --- EM Electromagnetic multipole
79- 85 I7 cm-1 DeltaE Transition energy
100-107 F8.2 0.1nm lambda Wave length
112-120 E9.4 s-1 A Transition rate in length form
125-133 E9.4 --- gf Weighted oscillator strength
142-146 F5.3 --- dT ? Accuracy indicator (1)
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Note (1): dT=|Al-Av|/max(Al,Av), Al and Av rates in length and velocity form.
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Acknowledgements:
Per Jonsson, per.jonsson(at)mah.se
(End) Patricia Vannier [CDS] 06-Nov-2015