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 Note: only 482 bound levels have been retained. Observed energies: levels 3,5,6 from SUMER measurements by Feldman, U. & Doschek, G.A., (2007) Atomic Data and Nuclear Data Tables 93, 779 Other levels: NIST Atomic Spectra Database, (ver. 5.7.1), [Online]. https://physics.nist.gov/PhysRefData/ASD/levels_form.html Note: several NIST energies were uncertain and were not included. Produced as part of the 'CHIANTI' atomic data base collaboration by Giulio Del Zanna, June 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 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 ground configuration 2s2 2p2 and the 2s 2p3 are from the MCHF calculation by G. Tachiev and C. Froese Fischer, (energy adjusted), 2001, Can. J. Phys. 79,955 http://adsabs.harvard.edu/abs/2001CaJPh..79..955T Observed energies: levels 3,5,6 from SUMER measurements by Feldman, U. & Doschek, G.A., (2007) Atomic Data and Nuclear Data Tables 93, 779 Other levels: NIST Atomic Spectra Database, (ver. 5.7.1), [Online]. https://physics.nist.gov/PhysRefData/ASD/levels_form.html Note: several NIST energies were uncertain and were not included. Produced as part of the 'CHIANTI' atomic data base collaboration by Giulio Del Zanna, June 2020 %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, June 2020 Produced as part of the 'CHIANTI' atomic data base collaboration by Note: only 482 bound levels have been retained. DOI: 10.1051/0004-6361/201936931 Mao, J. , Badnell, N. R., Del Zanna, G., 2020, A&A, 634, A7 oscillator strengths and effective collision strengths:
Page created by Giulio Del Zanna on Tue Dec 3 13:23:00 2024