J/A+A/566/A105 SiIX K-shell energy levels and transitions (Wei+, 2014)
K-shell energy levels and radiative rates for transitions in Si XI.
Wei H.G., Shi J.R., Wang F.L., Zhong J.Y., Liang G.Y., Zhao G.
<Astron. Astrophys. 566, A105 (2014)>
=2014A&A...566A.105W 2014A&A...566A.105W
ADC_Keywords: Atomic physics
Keywords: atomic data - atomic processes
Abstract:
Accurate atomic data are needed to analyze the SiIX
K-shell features in astrophysical X-ray spectra. Relative large
discrepancies in the existing atomic data have impeded this progress.
We present the accurate SiIX K-shell transition data, including
K-shell energy levels, wavelengths, radiative rates, and oscillator
strengths. The flexible atomic code (FAC), which is a fully
relativistic atomic code with configuration interaction (CI) included,
was employed to calculate these data. To investigate the CI effects,
calculations with different configurations included were carried out.
The K-shell atomic data of SiIX transitions between 1s22s22p2,
1s22s2p3, 1s22p4, 1s2s22p3, 1s2s2p4, and 1s2p5 are
reported. The accuracy of our data is demonstrated by comparing them
with the available experimental measurements and theoretical
calculations. The energy levels are accurate to 3.5eV, the wavelengths
to within 15mÅ. For most transitions, the radiative rates an
accuracy of 20%. The effects of CI from high-energy configurations
were investigated as well.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table3.dat 54 50 K-shell level energies in SiIX
table4.dat 49 146 Wavelengths, radiative rates and oscillator
strengths for transitions in SiIX
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See also:
J/A+AS/102/435 : Transitions of SI in visible and infra-red (Biemont+ 1993)
J/A+AS/105/245 : Stark broadening Al XI and Si XII (Dimitrijevic+ 1994)
J/A+A/423/397 : Stark broadening of Si V (Ben Nessib+, 2004)
J/A+A/508/1527 : SiII Radiative transition rates (Bautista+, 2009)
J/ApJS/121/591 : Oscillator Strengths for SiVI (Coutinho+, 1999)
J/A+AS/129/155 : Si XI + Si XIII lines Stark broadening (Dimitrijevic+ 1998)
J/MNRAS/387/871 : SiVI atomic data and broadening effect (Hamdi+, 2008)
J/A+A/541/A61 : Oscillator and collision strengths for SiVIII (Tayal+, 2012)
J/A+A/522/A103 : Si XI K-shell energy levels and radiative rates (Wei+, 2010)
Byte-by-byte Description of file: table3.dat
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Bytes Format Units Label Explanations
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5- 6 I2 --- Index [1/50] Index
9- 32 A24 --- Conf Configurations
38 I1 --- J [0/3] Total angular momentum (Parity)
39 A1 --- --- [(]
40 A1 --- P [oe] Parity (odd or even)
41 A1 --- --- [)]
46- 54 F9.4 eV E [0/1879] Level energy from present FAC6 model
calculations with the FAC code
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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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5- 6 I2 --- u [21/50] Upper level
11- 12 I2 --- l [1/20] Lower level
18- 23 F6.4 0.1nm lambda [6.6/7.4] Transition wavelength λ (Å)
29- 36 E8.3 s-1 A Radiative rate
42- 49 E8.3 --- f(lu) Oscillator strengths between levels
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Acknowledgements:
Huigang Wei, whg(at)nao.cas.cn
(End) Huigang Wei [NAOC], Patricia Vannier [CDS] 22-May-2014