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

o_4.elvlc (energy levels)

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

 
%energy levels (n=2): Fuhr, J.R., et al., "NIST Atomic Spectra Database" Ver. 2.0, March 1999, NIST Physical Reference Data
%energy levels (n=3): Kelly,R.L., 1987, J.Phys.Chem.Ref.Data 16, Suppl. 1. 
%Theoretical energy levels: Zhang,H.L., Graziani,M., Pradhan,A.K., 1994, A&A, 283, 319.
%theoretical energy levels: Sampson and Zhang, 1995, unpublished calculations
%comment:  energy levels renumbered    
%produced as part of the Arcetri/Cambridge/NRL 'CHIANTI' atomic data base collaboration
%
% E.Landi and P.R. Young - 8-Dec-2003
 

o_4.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_4.wgfa
%energy levels (n=2): Fuhr, J.R., et al., "NIST Atomic Spectra Database" Ver. 2.0, March 1999, NIST Physical Reference Data
%energy levels (n=3): Kelly,R.L., 1987, J.Phys.Chem.Ref.Data 16, Suppl. 1.
%Theoretical energy levels: Zhang,H.L., Graziani,M., Pradhan,A.K., 1994, A&A, 283, 319.
%theoretical energy levels: Sampson and Zhang, 1995, unpublished calculations
%A-values ground forbidden transition: Flower, D.R., Nussbaumer, H., 1975, A&A, 45, 145
%A-values allowed transitions 2s2.2p-2s.2p2, 2s2.2p-2s2.3s and 2s2.2p-2s2.3d: Correge,G., Hibbert,A., 2002, J.Phys.B, 35, 1211
%A-values allowed transitions 2s.2p2-2p3, 2s.2p2-3s2.3p, 2s2.3s-2s2.3p, 2s2.3p-3s2.3d, 2p3-3s2.3d, 
   2s.2p2-2s.2p.3s (4P levels in 3s, only): Tachiev, G., & Froese Fischer, C., 2000, J.Phys.B, 33, 2419
%A-values all other allowed transitions: Unpublished data of H.L. Zhang & D.H. Sampson, 1995
%comment: gf and A values for transitions 123-71 and 124-72 are estimates
%comment: The following table lists all those transitions for which the A-values
   are more than 30% different from the previous CHIANTI file (pre-v5):

  i  j       wvl       A_1       A_2   %diff

  1 16   279.631 1.91e+009 2.67e+009   39.44
  1 31   238.360 2.17e+010 2.91e+010   33.78
  2 16   279.934 3.85e+009 5.35e+009   38.81
  2 31   238.580 4.35e+009 5.81e+009   33.58
  2 50   238.570 2.56e+010 3.49e+010   35.97
 13 50   608.290 2.61e+003 5.80e+00522146.07
 12 31   608.459 5.02e+003 5.65e+00511163.96
  3 74   272.177 1.01e+009 1.70e+009   67.82
  8 73   442.880 1.72e+006 9.31e+007 5315.94
  9 73   476.918 5.79e+006 2.92e+006  -49.56
  3 88   272.077 2.52e+009 4.25e+009   68.43
  8 87   442.710 1.76e+006 9.38e+007 5238.65
  9 87   476.720 1.39e+006 4.68e+005  -66.35
  4 74   272.274 5.06e+009 8.47e+009   67.43
  6 73   379.924 7.63e+007 4.93e+008  546.18
 10 73   477.466 2.83e+006 1.14e+006  -59.58
  4 88   272.174 8.08e+008 1.36e+009   68.07
  6 87   379.798 7.41e+006 4.92e+007  564.19
  6 88   320.479 4.83e+004 7.41e+004   53.66
 10 87   477.269 7.02e+006 3.21e+006  -54.23
  4106   271.991 1.81e+009 3.07e+009   69.11
  5 87   313.979 6.57e+002 9.92e+003 1408.60
  5 88   272.310 2.74e+009 4.58e+009   67.30
  7 87   379.778 6.75e+007 4.44e+008  556.84
  5106   272.127 4.25e+009 7.15e+009   68.35
  7106   320.211 2.71e+004 8.98e+004  230.81

%produced as part of the Arcetri/Cambridge/NRL 'CHIANTI' atomic data base collaboration
%
% P.R. Young and E. Landi - 12-Dec-2003

o_4.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_4.splups
%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
%oscillator strengths: Flower, D.R., Nussbaumer, H., 1975, A&A, 45, 145
%effective collision strengths (levels 1 - 15): Zhang, H.L., Graziani, M., Pradhan, A.K., 1994, A&A, 283, 319
%collision strengths (levels 16 and above): Sampson and Zhang, 1995, unpublished calculations
%comment: effective collision strengths are provided in the temperature range 3.0 < Log T < 5.65
%comment: transitions amongst levels 1-10 were re-fitted to better reproduce the low temperature behaviour (PRY 13-Jun-2006)
% produced as part of the Arcetri/Cambridge/NRL 'CHIANTI' atomic data base collaboration
%
%  K.P. Dere and P.R. Young - Mar 2006

o_4.psplups (proton collision data)

contains the spline fits to the scaled proton collision strengths.

 

%filename: o_4.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 2e4 to 3e5 K.
%produced as part of the Arcetri/Cambridge/NRL 'CHIANTI' atomic data base collaboration
%
% Peter Young   15-May-2001

---

The html tables below contain the radiative data of the brightest lines sorted in wavelength

o_4_table1.html (html table -- 151.6040 -- 616.9520 A)

o_4_table2.html (html table -- 617.0050 -- 4047.7429 A)


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