The CHIANTI database consists of the following primary ASCII files for this ion:

o_8.elvlc (energy levels)

contains the energy levels in cm^(-1) It includes both experimental and theoretical values of the levels energies.

 
%energy levels: Martin, W.C., Sugar, J., Musgrove, A., Dalton, G.R., 1995, 
    NIST Database for Atomic Spectroscopy, Version 1.0, NIST Standard Reference Database 61.
%comment:      7028393.6     Limit
%comment: theoreical energy levels are identical to the observed ones.
%produced as part of the Arcetri/Cambridge/NRL 'CHIANTI' atomic data base collaboration
%
%  K.P.Dere 1999
 

o_8.wgfa (radiative data)

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: o_8.wgfa
%energy levels: Martin, W.C., Sugar, J., Musgrove, A., Dalton, G.R., 1995,
    NIST Database for Atomic Spectroscopy, Version 1.0, NIST Standard Reference Database 61.
%A values (1-2): Parpia, F.A., Johnson, W.R., 1982, Phys.Rev.A, 26, 1142.
%Radiative data: SUPERSTRUCTURE calculation including all levels up to n=5.
%comment: level ordering does not follow energy ordering.
%
%  Giulio Del Zanna  -  May 2006

o_8.splups (electron collision data)

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: o_8.splups
%oscillator strengths: SUPERSTRUCTURE calculation including all levels up to n=5.
%effective collision strengths: Ballance, Badnell, & Smith 2003, J. Phys. B, 36, 3707
%comment: The fine structure collision strengths have been obtained assuming a distribution 
          according to statistical weights.
%comment: Only excitations from the 1s and 2s levels are retained from the original dataset.
%produced as part of the Arcetri/Cambridge/NRL 'CHIANTI' atomic data base collaboration
%
%   G. Del Zanna  -  May 2006

o_8.splups (proton collisional data) Not available in this VERSION.

o_8.reclvl (total recombination population rates)

 
%filename: o_8.reclvl
%Radiative recombination rates: Mewe, R, Gronenschild, E.H.B.M, and van den Oord, G.H.J, 1982, A&AS, 62, 197
%produced as part of the Arcetri/Cambridge/NRL 'CHIANTI' atomic data base collaboration
%
% E. Landi - Aug 2006

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The html table below contains the radiative data of the brightest lines sorted in wavelength

o_8_table.html (html table)


Last revised by G. Del Zanna on 4-Sep-2009