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, 643, A95 "R-matrix electron-impact excitation data for the N-like iso-electronic sequence" DOI: 10.1051/0004-6361/202039195 Note: only bound levels have been retained. Observed energies: NIST Atomic Spectra Database,[Online]. https://physics.nist.gov/PhysRefData/ASD/levels_form.html Produced as part of the 'CHIANTI' atomic data base collaboration by Giulio Del Zanna, Mar 2023 -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, 643, A95 "R-matrix electron-impact excitation data for the N-like iso-electronic sequence" DOI: 10.1051/0004-6361/202039195 Note: only bound levels have been retained. Only transition probabilities with a branching ratio greater than 10^(-5) have been retained. gf-values, A-values for the lowest n=2 13 levels: Tachiev, G.I. and Froese Fischer, C., A&A, 2002,385,716 MCHF calculations doi = 10.1051/0004-6361:20011816 Produced as part of the 'CHIANTI' atomic data base collaboration by Giulio Del Zanna, Mar 2023 %File processed with wgfa_tidy by pryoung on 31-May-2023
contains the effective electron collision strengths scaled according to the rules formulated by Burgess and Tully (1992).
Giulio Del Zanna, Mar 2023 Produced as part of the 'CHIANTI' atomic data base collaboration by Note: only bound levels have been retained. DOI: 10.1051/0004-6361/202039195 "R-matrix electron-impact excitation data for the N-like iso-electronic sequence" Mao, J., Badnell, N. R., Del Zanna, G., 2020, A&A, 643, A95 oscillator strengths and effective collision strengths:
contains the spline fits to the scaled proton collision strengths.
%file: si_8.psplups %energy levels: Bhatia & Landi, 2003, ADNDT, 85, 317 %proton rates: Bhatia & Landi, 2003, ADNDT, 85, 317 %produced as part of the Arcetri/Cambridge/NRL atomic data base collaboration 'CHIANTI' % % Enrico Landi Jul 2001
Page created by Giulio Del Zanna on Tue Dec 3 13:25:11 2024