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: http://www.arcetri.astro.it/science/chianti/chianti_5.1/database/s/s_12.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 (n=2): Edlen, B, 1983, Phys. Scripta, 28, 483 %energy levels (n=3): Ralchenko Y., Jou, F.C., Kelleher, D.E., Kramida, A.E., Musgrove, A., Reader, J., Wiese, W.L., Olsen, K., 2005, NIST Atomic Spectra Database, Version 3.0 %energy levels (levels 37,75,77,89,122): Lepson et al, 2005, ApJ, 625, 1045 %Theoretical energy levels(n=2): Zhang, H.L., Graziani, M., Pradhan, A.K., 1994, A&A, 283, 319. %theoretical energy levels(n=3): Sampson and Zhang, 1995, unpublished calculations %produced as part of the Arcetri/Cambridge/NRL 'CHIANTI' atomic data collaboration % % K.P.Dere and E.Landi - Mar 2005
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 (n=2): Edlen, B, 1983, Phys. Scripta, 28, 483 %energy levels (n=3): Ralchenko Y., Jou, F.C., Kelleher, D.E., Kramida, A.E., Musgrove, A., Reader, J., Wiese, W.L., Olsen, K., 2005, NIST Atomic Spectra Database, Version 3.0 %energy levels (levels 37,75,77,89,122): Lepson et al, 2005, ApJ, 625, 1045 %theoretical energy levels (16- 125): Sampson and Zhang, 1995, unpublished calculations %oscillator strengths (16- 125): Sampson and Zhang, 1995, unpublished calculations %oscillator strengths: Dankwort, W., Trefftz, E., 1978, A&A, 65, 93 %oscillator strengths: Bhatia, A.K., Feldman, U., Seely, J.F., 1986, ADNDT, 35, 319 %A values: Flower, D.R., Nussbaumer, H., 1975, A&A, 45, 349 %A values: Saha, H.P., Trefftz, E., 1983, Solar Phys., 87, 233 %comment: theoretical wavelengths agree with NIST observed wavelength on the order of 1-10% %comment: gf and A values for transitions 123-71 and 124-72 are estimates %produced as part of the Arcetri/Cambridge/NRL 'CHIANTI' atomic data collaboration % % K.P.Dere and E.Landi - Mar 2005
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: s_12.splups %oscillator strengths: Dankwort, W., Trefftz, E., 1978, A&A, 65, 93 %collision strengths: Zhang, H.L., Graziani, M., Pradhan, A.K., 1994, A&A, 283, 319 % Comment: A small error was found in Zhang, H.L. et al 1994 upsilons, affecting upsilons for Al IX, Si X, S XII, Ar XIV, Ca XVI (and not lower-Z ions). The present data have been corrected by the authors. %comment: effective collision strengths are provided in the temperature range 4.1 < Log T < 6.8 temperature range. %produced as part of the Arcetri/Cambridge/NRL 'CHIANTI' atomic data base collaboration % % Enrico Landi - Aug 2001
contains the spline fits to the scaled proton collision strengths.
References:
%filename: s_12.psplups %rates: Foster VJ, Keenan FP, Reid RHG, ADNDT 67, 99, 1997 %energies: From .elvlc file, experimental energies %comment: The rate coefficients are in units cm^3/s. %comment: Fits valid for temperatures 3e5 to 8e6 K. %produced as part of the Arcetri/Cambridge/NRL 'CHIANTI' atomic data base collaboration % % Peter Young 15-May-2001