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: http://www.arcetri.astro.it/science/chianti/chianti_5.1/database/fe/fe_10.html
Дата изменения: Thu Sep 15 16:58:44 2005 Дата индексирования: Sat Dec 22 14:03:17 2007 Кодировка: Поисковые слова: п п п п п п п п п п п п п п п |
The CHIANTI database consists of 4 primary ASCII files for each ion in the database.
contains the energy levels in cm^(-1) It includes both experimental data and theoretical values of the levels energies.
References:
%Observed and Theoretical energies (levels 1-54): Del Zanna, Berrington, Mason, 2004, A&A, 422, 731 %Observed energy levels (55-172): NIST Database for Atomic Spectroscopy, Version 1.0, NIST Standard Reference Database 61, 1995 %theoretical energy levels (55-172): Malinovsky et al., 1980, ApJ, 235, 665 %comment: The second column has the theoretical energies of the scattering calculations, while the third column has the theoretical energies from the SUPERSTRUCTURE calculation (with term energy corrections). %produced as part of the Arcetri/Cambridge/NRL 'CHIANTI' atomic data base collaboration % % Giulio Del Zanna and Peter Young - July 20, 2005
contains wavelengths, gf and A values for each transition. Wavelengths are based on experimental level energies where available; wavelengths calculated from theoretical energies are less accurate and are given as negative values.
References:
%Observed and Theoretical energies (levels 1-54): Del Zanna, Berrington, Mason, 2004, A&A, 422, 731 %Observed energy levels (55-172): NIST Database for Atomic Spectroscopy, Version 1.0, NIST Standard Reference Database 61, 1995 %theoretical energy levels (55-172): Malinovsky et al., 1980, ApJ, 235, 665 %A values and oscillator strengths (levels 1-54): Del Zanna, Berrington, Mason, 2004, A&A, 422, 731 %comment: Theoretical wavelengths for levels 1-54 are obtained from the SUPERSTRUCTURE calculation (with term energy corrections) in the .elvlc file, from Del Zanna, Berrington, Mason, 2004, A&A, 422, 731 %A values (levels 55-172): A SSTRUCT run performed by P.R.Young. %comment: the A values for transitions between levels 55-172 have been calculated using a configuration model of Fe X in SSTRUCT. The configurations included were: 3s2 3p5, 3s 3p6, 3s2 3p4 3d, 3s 3p5 3d, 3p6 3d 3s2 3p3 3d2, 3s 3p4 3d2 3s2 3p4 4s, 3s2 3p4 4p, 3s2 3p4 4d 3s2 3p4 4f, 3s2 3p4 5s, 3s2 3p4 5p 3s 3p5 4s, 3s 3p5 4p, 3s 3p5 5s %produced as part of the Arcetri/Cambridge/NRL 'CHIANTI' atomic data base collaboration % % Giulio Del Zanna and Peter Young - July 20, 2005
contains the spline fits to the electron collision strengths scaled according to Burgess and Tully (1992). Accurate replication of the temperature averaged collision strength over a wide range of temperatures can be accomplished with the data in this file.
References:
%filename: fe_10.splups %Oscillator strengths (levels 1-54): Del Zanna, Berrington, Mason, 2004, A&A, 422, 731 (scattering calculation) %Collision data for transitions to the first three levels: Pelan, Berrington, A&A 2001, 365, 258 %Collision data for transitions to levels up to 54: Del Zanna, Berrington, Mason, 2004, A&A, 422, 731 %collision strengths for transitions to levels 55-172: Malinovsky et al., ApJ 235, 665, 1980 %comment: Maxwellian-averaged collision strengths have been calculated in the temperature range 2.5 10^5 - 10^7 K %comment: Although for many of the transitions involving levels >62 there were gf values available, they have been fitted as Type 2 transitions. This is because, as Type 1 transitions they were often difficult to fit (the 1-89 transition is a typical example). Some of the 4s transitions (levels 55-62) showed unusual shapes in the omega structure (e.g., 2-56, 1-58). I'm not sure how trustworthy this data is. %produced as part of the Arcetri/Cambridge/NRL 'CHIANTI' atomic data base collaboration % % Giulio Del Zanna and Peter Young - July 20, 2005
contains the spline fits to the scaled proton collision strengths.
References:
%filename: fe_10.psplups %rates: Bhatia A.K., Doschek, G.A., ADNDT 60, 97, 1995 %rates: Bely O., Faucher P., A&A 6, 88, 1970 (for 1-2 transition) %energies: Observed energies from .elvlc file, except for level 10 for which the theoretical energy from the .elvlc file is used. %comment: For all transitions except 1 - 2, the rates were only tabulated at one temperature. I have fit this data with a straight line that is forced to be zero at a scaled temperature of 0 to emulate the behaviour of proton rates. %comment: Fitted using single_temp.pro with scalx=0.90 %produced as part of the Arcetri/Cambridge/NRL 'CHIANTI' atomic data base collaboration % % Peter Young 17-Dec-2001