The CHIANTI database has 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.
Theoretical energies: Mao, J. , Badnell, N. R., Del Zanna, G., 2020, A&A, 634, A7 DOI: 10.1051/0004-6361/201936931 Observed energies: NIST Atomic Spectra Database, (ver. 5.7.1), [Online]. https://physics.nist.gov/PhysRefData/ASD/levels_form.html Produced as part of the 'CHIANTI' atomic data base collaboration by Giulio Del Zanna, July 2020 -1
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.
gf-values, A-values and theoretical energies: Mao, J. , Badnell, N. R., Del Zanna, G., 2020, A&A, 634, A7 DOI: 10.1051/0004-6361/201936931 Only transition probabilities with a branching ratio greater than 10^(-5) have been retained. gf-values, A-values for the ground configuration 2s2 2p2 and the 2s 2p3 are from the ab-inition MCHF calculation by G. Tachiev (2004), following G. Tachiev and C. Froese Fischer, (energy adjusted), 2001, Can. J. Phys. 79,955 http://adsabs.harvard.edu/abs/2001CaJPh..79..955T Observed energies: NIST Atomic Spectra Database, (ver. 5.7.1), [Online]. https://physics.nist.gov/PhysRefData/ASD/levels_form.html Produced as part of the 'CHIANTI' atomic data base collaboration by Giulio Del Zanna, July 2020
contains the effective electron collision strengths scaled according to the rules formulated by Burgess and Tully (1992).
% E.Landi and P.R.Young 2000 % %produced as part of the Arcetri/Cambridge/NRL 'CHIANTI' atomic data base collaboration %comment: effective collision strengths were given in the temperature range 5.0 < Log T < 7.0. %comment: the authors regard their collisional model to be accurate to ~10%. %effective collision strengths (transitions 1 - 15): Aggarwal, Berrington & Keenan, 1991, ApJS, 77, 441 %collision strengths transitions 6-46 : Bhatia, A.K., Doschek, G.A., 1993, ADNDT, 53, 195 'HF+2p4' oscillator strengths found in Aggarwal, 1983, J.Phys.B, 16, 2231 configuration model of the ion, which was shown to closely match the %oscillator strengths: are taken from "superstructure" using a 3 %filename: ca_15.splups
contains the spline fits to the scaled proton collision strengths.
%filename: ca_15.psplups %rates: Ryans R.S.I., Foster-Woods V.J, Keenan F.P., Reid R.H.G., 1999, ADNDT 73, 1-42 %energies: Cheng K.T., Kim Y.K., Desclaux J.P., 1979, ADNDT 24, 111 %comment: Fits valid for temperatures 7e5 to 6e7 K. %produced as part of the Arcetri/Cambridge/NRL 'CHIANTI' atomic data base collaboration % % Peter Young 15-May-2001
Page created by Giulio Del Zanna on Wed Jun 8 16:02:39 2022