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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
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:
FileName Lrecl Records Explanations
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
See also: J/A+AS/129/155 : Si XI + Si XIII lines Stark broadening (Dimitrijevic+ 1998) Byte-by-byte Description of file: table1.dat
Bytes Format Units Label Explanations
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) 71- 79 F9.4 eV NIST ?=0.0000 Level energies compiled in NIST database (Ralchenko et al. 2000) (1)
Note (1): NIST database, http://physics.nist.gov/PhysRefData. 0.0000 means lack of energy values in NIST except for ground level.
Byte-by-byte Description of file: table3.dat
Bytes Format Units Label Explanations
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
Byte-by-byte Description of file: table4.dat
Bytes Format Units Label Explanations
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
Acknowledgements: Jianrong Shi, sjr(at)bao.ac.cn
(End) Wei H.G.[NAOC], Patricia Vannier [CDS] 23-Jul-2010
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