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The CHIANTI database consists of the following primary ASCII files for this ion:
contains the energy levels in cm^(-1) It includes both experimental and theoretical values of the levels energies.
%observed energy levels: Martin, W. C., Sugar, J., Musgrove, A., and Dalton, G. R., 1995, NIST Database for Atomic Spectroscopy, Version 1.0, NIST Standard Reference Database 61. %comment: 18584144 Limit %comment: theoretical levels are the same as the observed ones. %produced as part of the Arcetri/Cambridge/NRL atomic data base collaboration CHIANTI % % K.P.Dere 2001
contains wavelengths, gf and A values of the transitions. The wavelengths are based on the experimental energy levels and should be the best available. Wavelengths calculated from the theoretical energies are of an indeterminate accuracy and their values are presented as negative values of the calculated wavelength.
%energy levels: Martin, W.C., Sugar, J., Musgrove, A., Dalton, G.R., 1995,
NIST Database for Atomic Spectroscopy, Version 1.0, NIST Standard Reference Database 61
% A values: Parpia, F.A., Johnson, W.R., 1982, Phys.Rev.A, 26, 1142
%oscillator strengths: Wiese,W.L., Smith,M.W., Glennon,B.M., 1966, Atomic Transition Probabilities, NSRDS-NBS-4
%note: hydrogenic f values
%produced as part of the Arcetri/Cambridge/NRL 'CHIANTI' atomic data base collaboration
%
% Ken Dere 1998
contains the spline fits to the electron collision strengths scaled according the rules formulated by 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.
%filename: al_13.splups
%oscillator strengths: Wiese,W.L., Smith,M.W., Glennon,B.M., 1966, Atomic Transition Probabilities, NSRDS-NBS-4
%oscillator strengths: Parpia, F.A., Johnson, W.R., 1982, Phys.Rev.A, 26, 1142
%collision strengths: interpolation of R-matrix calculations of C VI, Ne X, Si XIV, Ca XX and Fe XXVI
%comment: the original data used for the interpolation were from the calculations of Aggarwal & Kingston
(1991 to 1993). The range of temperature for which upsilons were provided was different for each
ion, however, the interpolated results should be most reliable in the 4.2 < Log T < 6.2.
%produced as part of the Arcetri/Cambridge/NRL 'CHIANTI' atomic data base collaboration
%
% K.P. Dere Aug 1998