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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 energy levels: Del Zanna and Mason, 2005, A&A, 433, 731 %theoretical energy levels (second column): Storey, Del Zanna, Mason, Zeippen, 2005, A&A, 433, 717 (scattering calculation) %theoretical energies (third column): Del Zanna and Mason, 2005, A&A, 433, 731 (SUPERSTRUCTURE calculation with term energy correction) %produced as part of the Arcetri/Cambridge/NRL 'CHIANTI' atomic data base collaboration % % Giulio Del Zanna - June 7 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 energy levels: Del Zanna and Mason, 2005, A&A, 433, 731 %theoretical energies: Del Zanna and Mason, 2005, A&A, 433, 731 (SUPERSTRUCTURE calculation with term energy correction) %A values and oscillator strengths: Del Zanna and Mason, 2005, A&A, 433, 731 %comment: The theoretical wavelengths are obtained from the SUPERSTRUCTURE calculation (with term energy corrections) %produced as part of the Arcetri/Cambridge/NRL 'CHIANTI' atomic data base collaboration % % Giulio Del Zanna - June 7 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_12.splups %oscillator strengths: Storey, Del Zanna, Mason, Zeippen, 2005, A&A, 433, 717 (scattering calculation) %effective collision strengths: Storey, Del Zanna, Mason, Zeippen, 2005, A&A, 433, 717 %comment: only data for collisions from the ground 3s2.3p3 levels and from/to selected metastable 3s2.3p2.3d levels are retained %comment: effective collision strengths have been calculated in the temperature range 10^5 - 10^8 K %produced as part of the Arcetri/Cambridge/NRL 'CHIANTI' atomic data base collaboration % % Giulio Del Zanna - June 7 2005
contains the spline fits to the scaled proton collision strengths.
References:
%filename: fe_12.psplups
%rates: Landman, D.A., 1978, ApJ 220, 366
%energies: Landman, D.A., 1978, ApJ 220, 366
%comment: Errors (comparing original rates with those derived from the above
splines) are at most 2\% for individual points. For transition 3-4,
a good fit could not be found, likely implying errors in the original
data values. Errors of up to 4.5\% are found for this transition.
%produced as part of the Arcetri/Cambridge/NRL 'CHIANTI' atomic data base collaboration
%
% Peter Young 7-Jun-2001