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J/A+A/444/305       A-values + oscillator strength of Ca XIII     (Landi+, 2005)

Atomic data and spectral line intensities for Ca XIII. Landi E., Bhatia A.K. <Astron. Astrophys. 444, 305 (2005)> =2005A&A...444..305L
ADC_Keywords: Atomic physics ; Sun ; Ultraviolet Keywords: Sun: corona - Sun: UV radiation - atomic data Abstract: Electron impact collision strengths, energy levels, oscillator strengths and spontaneous radiative decay rates are calculated for Ca XIII. The configurations used are 2s2.2p4, 2s.2p5, 2p6, 2s2.2p3.3s, 2s2.2p3.3p and 2s2.2p3.3d giving rise to 86 fine-structure levels in intermediate coupling. Collision strengths are calculated at five incident energies (40, 80, 120, 160 and 200Ry) in the distorted wave approximation. Excitation rate coefficients are calculated as a function of electron temperature by assuming a Maxwellian electron velocity distribution. Using the excitation rate coefficients and the radiative transition rates, statistical equilibrium equations for level populations are solved at electron densities covering the range of 108-1014cm^-3 at an electron temperature of logTe(K)=6.5, corresponding to maximum abundance of Ca XIII. Relative and absolute spectral line intensities are calculated, and their diagnostic relevance is discussed. This dataset will be made available in the next version of the CHIANTI database. Description: Atomic data, energy levels, radiative transition rate and electron-ion collision rate coefficients have been calculated for Ca XIII using the distorted wave approximation. They have been compared with data available in the literature and with observations. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table1.dat 60 86 Atomic data and theoretical and experimental energy levels table2.dat 76 3655 Oscillator strengths, A values and collision strengths for all transitions
See also: J/A+A/434/365 : A-values + oscillator strength of O-like ions (Landi+, 2005) J/A+A/426/717 : Oscillator strengths for ClII lines (Tayal+, 2004) J/A+A/389/716 : Oscillator strengths for Li-like ions (Nahar, 2002) J/PAZh/28/41 : Eu III oscillator strengths (Masonkina+, 2002) J/ApJS/121/591 : Oscillator Strengths for SIV (Coutinho+, 1999) J/A+AS/130/541 : Co II oscillator strengths (Raassen+ 1998) Byte-by-byte Description of file: table1.dat
Bytes Format Units Label Explanations
2- 3 I2 --- Index Index of level 5- 17 A13 --- Conf Configuration 21 I1 --- S Total spin momentum S 22 A1 --- L Total orbital angular momentum L (in letters) 23 I1 --- J [0/9]? Total angular momentum J 28- 34 I7 cm-1 E24 Calculated energy - 24 configuration model 39- 45 I7 cm-1 E6 Calculated energy - 6 configuration model 49- 55 I7 cm-1 Eobs ? Observed energy from the literature 60 A1 --- Ref [A-F] Source of observed energy (1)
Note (1): Sources are numbered as follows: A = Acton et al., 1985ApJ...291..865A C = Feldman et al., 2000ApJ...544..508F D = Doschek G.A., Feldman U., Cohen L. 1973, J. Opt. Soc. Am., 63, 1463 E = Edlen B. 1983, Physica Scripta, 28, 51 F = Fawcett & Hayes 1975MNRAS.170..185F
Byte-by-byte Description of file: table2.dat
Bytes Format Units Label Explanations
2- 3 I2 --- Low Lower level in the transition 5- 6 I2 --- Up Upper level in the transition 8- 16 E9.3 --- gf Weighted Oscillator Strength 18- 26 E9.3 s-1 Avalue Einstein coefficient 28- 36 E9.3 --- Omega40 Collision strength (E= 40 Ry) 38- 46 E9.3 --- Omega80 Collision strength (E= 80 Ry) 48- 56 E9.3 --- Omega120 Collision strength (E=120 Ry) 58- 66 E9.3 --- Omega160 Collision strength (E=160 Ry) 68- 76 E9.3 --- Omega200 Collision strength (E=200 Ry)
Acknowledgements: Enrico Landi, landi(at)
(End) Patricia Vannier [CDS] 18-Nov-2005
The document above follows the rules of the Standard Description for Astronomical Catalogues.From this documentation it is possible to generate f77 program to load files into arrays or line by line

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