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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 (1-15): Edlen, 1984, Phys.Scripta, 30, 135
%Observed energy levels (16-22): 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: Bell and Ramsbottom, 2000, ADNDT 76, 176
%produced as part of the Arcetri/Cambridge/NRL 'CHIANTI' atomic data base collaboration
%
% G. Del Zanna, Dec 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.
%Observed energy levels (1 - 15): Edlen, 1984, Phys.Scripta, 30, 135
%Observed energy levels (16 - 22): 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
% A values for transitions within the ground configuration: Merkelis et al., 1999, Physica Scripta 59,122
% gf values for transitions between the (1 - 15) levels: Zhang, Sampson, ADNDT, 1999, 72, 153
% A values for transitions with 2s.2p4 and 2p5: Zhang, Sampson, ADNDT, 1999, 72, 153
% A values for forbidden transitions with 2s.2p4 and 2p5: Merkelis et al., 1999, Physica Scripta 59,122
% A and gf values for transitions from levels 16-22: SUPERSTRUCTURE calculation by E.Landi Jan 2002
% Comment: 24 configurations used for the SUPERSTRUCTURE calculation:
%
% 2s2.2p3, 2s.2p4, 2p5, 2s.2p3.3l (l=s,p,d)
% 2s.2p3.4l (l=s,p,d,f), 2p4.3l (l=s,p,d)
% 2p4.4l (l=s,p,d,f), 2s2.2p2.3l (l=s,p,d)
% 2s2.2p2.4l (l=s,p,d,f)
%
%produced as part of the Arcetri/Cambridge/NRL 'CHIANTI' atomic data base collaboration
%
% G. Del Zanna and E.Landi, May 2001
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_10.splups %oscillator strengths (1 - 15): Zhang, Sampson, 1999, ADNDT, 72, 153 %oscillator strengths (16 - 22): SUPERSTRUCTURE calculation (see s_10.wgfa) %effective collision strengths: Bell and Ramsbottom, 2000, ADNDT, 76, 176 % Comment: Corrected errors in the transitions: 1-12, 2-22, 8-22, 12-19 % Comment: effective collision strengths are provided in the temperature range 4.6 < Log T < 6.7 % Comment: the effective collision strength at Log T=4.6 of transition 12-18 has been omitted from the fit %produced as part of the Arcetri/Cambridge/NRL 'CHIANTI' atomic data base collaboration % % G. Del Zanna, Dec 2001.