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: http://www.arcetri.astro.it/science/chianti/chianti_5.1/database/c/c_4.html
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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:
%energy levels: Fuhr, J.R., Kelleher, D.E., Martin, W.C., Musgrove, A., Sugar, J., Wiese, W.L.,
Dalton, G.R., Dragoset, R.A., Mohr, P.J., Olsen, K., Reader, J., Saloman, E.B., Sansonetti, C.J.,
Wiersma, G., "NIST Atomic Spectra Database" Ver. 2.0, March 1999, NIST Physical Reference Data.
% Theoretical energy levels: Badnell, N.R., Pindzola, M.S., 2000, J.Phys.B, 33, 1013
%produced as part of the Arcetri/Cambridge/NRL 'CHIANTI' atomic data base collaboration
%
% E. Landi Jun 2001
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: Fuhr, J.R., et al., "NIST Atomic Spectra Database" Ver. 2.0,
March 1999, NIST Physical Reference Data.
%oscillator strengths: Martin, I., Karwowski, J., Diercksen, G.H.F., Barrientos, C., 1993, A&AS, 100, 595.
%oscillator strengths: W.L. Wiese, M.W. Smith, B.M. Glennon, Atomic Transition Probabilities,
Vol I, NSRDS-NBS 4, 1966.
%produced as part of the Arcetri/Cambridge/NRL 'CHIANTI' atomic data base collaboration
%
% E.Landi Jun 2001
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: c_4.splups
%oscillator strengths: Martin, I., Karwowski, J., Diercksen, G.H.F., Barrientos, C., 1993, A&AS, 100, 595
%oscillator strengths: W.L. Wiese, M.W. Smith, B.M. Glennon, Atomic Transition Probabilities,
Vol I, NSRDS-NBS 4, 1966
%collision strengths: Badnell, N.R., Pindzola, M.S., 2000, J.Phys.B, 33, 1013
%comment: the original effective collision strengths are provided in LS coupling. These
have been transformed into intermediate coupling effective collision strengths
according to the statistical weights
%comment: the original data are given in the temperature range 4.2 < Log T < 6.5.
%produced as part of the Arcetri/Cambridge/NRL 'CHIANTI' atomic data base collaboration
%
% Enrico Landi Jun 2001