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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.
%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
%energy levels (12,16): Khardi et al, 1994, Physica Scripta, 49, 571
%energy levels: Martin, W.C., Zalubas, R., Musgrove, A., 1990, J.Phys.Chem.Ref.Data, 19, 821
%Theoretical energy levels (n=2): Zhang, Sampson, ADNDT, 1992, 52, 143
%theoretical energy levels (n=3): Sampson, D.H., Goett, S.J., Clark, R.E.H., 1984, ADNDT, 30, 125
%comment: level 18 has been relabeled 2p3p 1P1, j=1
%produced as part of the Arcetri/Cambridge/NRL 'CHIANTI' atomic data base collaboration
%
% E. Landi 1997
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.
%observed 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
%observed energy levels (12,16): Khardi et al, 1994, Physica Scripta, 49, 571
%theoretical energy levels (n=3): Sampson, D.H., Goett, S.J., Clark, R.E.H., 1984, ADNDT, 30, 125
%Allowed transitions oscillator strengths (n=2): Zhang, Sampson, 1992, ADNDT, 52, 143
%oscillator strengths: forbidden transitions (n=2): Muhlethaler, Nussbaumer, 1976, A&A, 48, 109
%Allowed transitions oscillator strengths (n=3): Sampson, D.H., Goett, S.J., Clark, R.E.H., 1984, ADNDT, 30, 125
%comment: level 18 has been relabeled 2p3p 1P1, j=1
%comment: gf values for transitions 19-26 and 23-26 were simply taken to be
equal to the O V gf values reported by Hibbert, 1980, J. Phys. B, 13, 1721.
The A values were obtained from the gf values by using the wavelengths listed.
%produced as part of the Arcetri/Cambridge/NRL 'CHIANTI' atomic data base collaboration
%
% E.Landi (n=2) and K.P.Dere (n=3) - 1997
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: s_13.splups %oscillator strengths (n=2): Zhang, Sampson, 1992, ADNDT, 52, 143 %oscillator strengths (n=3): Sampson, D.H., Goett, S.J., Clark, R.E.H., 1984, ADNDT, 30, 125 %effective collision strengths (1 - 10): Keenan, F.P., 1988, Phys.Scripta, 37, 57 %collision strengths (n=3): Sampson, D.H., Goett, S.J., Clark, R.E.H., 1984, ADNDT, 30, 125 %produced as part of the Arcetri/Cambridge/NRL atomic data base collaboration CHIANTI %comment: Have derived the upsilon data from Table III of Keenan 1988. The Delta-E's have been taken from the observed values in the .elvlc file. The gf values are from the .wgfa file. %comment: the effective collision strengths have been calculated in the temperature range 5.6 < Log T < 7.2 % % Enrico Landi March 2001 (n=2); n=3 levels added by K. Dere 6/97
contains the spline fits to the scaled proton collision strengths.
%filename: s_13.psplups
%rates: Ryans R.S.I., Foster-Woods V.J, Copeland F., Keenan F.P., Matthews A., Reid R.H.G., 1998, ADNDT 70, 179-229
%energies: Martin W.C., Sugar J., Musgrove A., Dalton G.R., 1995, NIST Database for Atomic Spectroscopy,
Version 1.0, NIST Standard Reference Database 61.
%comment: Fits valid for temperatures 5e5 to 7.5e7 K.
%produced as part of the Arcetri/Cambridge/NRL 'CHIANTI' atomic data base collaboration
%
% Peter Young 24-Oct-00