J/A+A/522/A103 Si XI K-shell energy levels and radiative rates (Wei+, 2010)
K-shell energy levels and radiative rates for transitions in Si XI.
Wei H.G., Shi J.R., Zhao G., Liang Z.T.
<Astron. Astrophys. 522, A103 (2010)>
=2010A&A...522A.103W 2010A&A...522A.103W
ADC_Keywords: Atomic physics
Keywords: atomic data - atomic processes
Abstract:
Atomic data for K-shell transitions are essential for modeling the K
absorption lines, which have been observed in the spectra of active
galaxies by high-resolution X-ray observatories, e.g. XMM, Chandra,
and Suzaku. These accurate atomic data are also needed for line
identifications and spectroscopic diagnostic of plasmas in laboratory
generated by laser or beam-foil method.The atomic code Flexible Atomic
Code (FAC) has been used to calculate these data. Relativistic effects
and configuration interactions are taken into account in
calculations.The K-shell transitions among the configurations of
1s22s2, 1s22s2p, 1s22p2, 1s22sn'l', 1s22pn'l',
1s2s22p, 1s2s2p2, 1s2p3, 1s2s2pn'l' and 1s2p2n'l', n'≤4,
l'≤n' for beryllium-like Si XI have been calculated. The K-shell
energy levels, wavelengths, radiative rates and oscillator strengths
for Si XI are reported. In order to assess the accuracy of current
data, comparison between our results with former experiments and other
theoretical works have been made.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 79 40 Target levels of Si XI and their threshold
energies (in eV)
table3.dat 54 680 The K-shell level energies in Si XI
table4.dat 49 5612 Wavelengths, radiative rates and oscillator
strengths for transitions in Si XI
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See also:
J/A+AS/129/155 : Si XI + Si XIII lines Stark broadening (Dimitrijevic+ 1998)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 2 I2 --- Index [1/40] Index
5- 32 A28 --- Conf Configurations
35 I1 --- J Total angular momentum
36 A1 --- --- [(]
37 A1 --- p [oe] Parity
38 A1 --- --- [)]
41- 49 F9.4 eV FAC1 Level energies computed by 40 levels
involved with FAC code
51- 59 F9.4 eV FAC2 Level energies computed by 680 levels
involved with FAC code
61- 69 F9.4 eV HFR1 Level energies computed by 40 levels
involved with HFR code from
Palmeri et al. (2008ApJS..177..408P 2008ApJS..177..408P)
71- 79 F9.4 eV NIST ?=0.0000 Level energies compiled in NIST
database (Ralchenko et al. 2000) (1)
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Note (1): NIST database, http://physics.nist.gov/PhysRefData.
0.0000 means lack of energy values in NIST except for ground level.
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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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4- 6 I3 --- Index [1/680] Index
10- 32 A23 --- Conf Configurations
38 I1 --- J Total angular momentum
39 A1 --- --- [(]
40 A1 --- p [oe] Parity
41 A1 --- --- [)]
43- 54 E12.7 eV Energy Level energy from present 680 level
calculations by 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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4- 6 I3 --- u [99/680] Upper level
11- 12 I2 --- l [1/98] Lower level
17- 23 F7.5 0.1nm Wave Tansition wavelength
25- 36 E12.7 s-1 A Radiative rate
38- 49 E12.7 --- f(lu) Oscillator strengths
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Acknowledgements:
Jianrong Shi, sjr(at)bao.ac.cn
(End) Wei H.G.[NAOC], Patricia Vannier [CDS] 23-Jul-2010