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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 (1-5,9,10): Edlen, B. 1983, Physica Scripta, 28, 51 %observed energy levels (6-8): Edlen, B. 1985, Physica Scripta, 32, 86 %observed energy levels (13,15): Fawcett, B.C, Hayes, R.W. 1975, MNRAS, 170, 185 %observed energy levels (27,28,39,41,45): Fawcett, B.C, Hayes, R.W. 1975, MNRAS, 170, 185 and Edlen, B., 1983, Physica Scripta, 28, 51 %observed energy levels (11,18,19,20): McKenzie, D.L., Landecker, P.B. 1982, ApJ, 254, 309 and Edlen, B., 1983, Physica Scripta, 28, 51 %Theoretical energy levels: 27-conf model from Landi & Bhatia 2009, ADNDT, 95, 155 %produced as part of the Arcetri/Cambridge/NRL 'CHIANTI' atomic data base collaboration % % E. Landi - Aug 2007
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.
%filename: ca_17.wgfa %observed energy levels (1-5,9,10): Edlen, B. 1983, Physica Scripta, 28, 51 %observed energy levels (6-8): Edlen, B. 1985, Physica Scripta, 32, 86 %observed energy levels (13,15): Fawcett, B.C, Hayes, R.W. 1975, MNRAS, 170, 185 %observed energy levels (27,28,39,41,45): Fawcett, B.C, Hayes, R.W. 1975, MNRAS, 170, 185 and Edlen, B., 1983, Physica Scripta, 28, 51 %observed energy levels (11,18,19,20): McKenzie, D.L., Landecker, P.B. 1982, ApJ, 254, 309 and Edlen, B., 1983, Physica Scripta, 28, 51 %Theoretical energy levels: 27-conf model from Landi & Bhatia, 2009, ADNDT, 95, 155 %A values and oscillator strengths: 27-conf model from Landi & Bhatia, 2009, ADNDT, 95, 155 %produced as part of the Arcetri/Cambridge/NRL 'CHIANTI' atomic data base collaboration % % E. Landi - Nov 2007
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: ca_17.splups %Oscillator strengths (1 - 10): Dufton, P.L., Kingston, A.E., Scott, N.S., 1983, J.Phys.B, 16, 3053 %Effective collision strengths (1 - 10): Dufton, P.L., Kingston, A.E., Scott, N.S., 1983, J.Phys.B, 16, 3053 %Oscillator strengths (11-92): Landi & Bhatia 2009, ADNDT, 95, 155 %Collision strengths (11-92): Landi & Bhatia 2009, ADNDT, 95, 155 % comment: effective collision strengths were given in the temperature range 6.4 < Log T < 7.2 %produced as part of the Arcetri/Cambridge/NRL 'CHIANTI' atomic data base collaboration % % Enrico Landi - Nov 2007
contains the spline fits to the scaled proton collision strengths.
%filename: ca_17.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: Bhatia A.K., Feldman U., Seely J.F., 1986, ADNDT 35, 449-472 %comment: Fits valid for temperatures 1e6 to 2e8 K. %produced as part of the Arcetri/Cambridge/NRL 'CHIANTI' atomic data base collaboration % % Peter Young 24-Oct-00