O II - VERSION 8.0


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

  1. o_2.elvlc (energy levels)
  2. contains the energy levels (in cm-1). It includes both experimental and theoretical values of the levels energies.

     
    %filename:  o_2.elvlc
    %Theoretical energy levels:  Tayal, S. S., 2007, ApJS, 171, 331
    http://adsabs.harvard.edu/abs/2007ApJS..171..331T
    %Observed energy levels:  Wenakar, I., 1990, Phys. Scripta, 42, 667
    http://adsabs.harvard.edu/abs/1990PhyS...42..667W
    Observed energy levels:  Kramida, A., Ralchenko, Yu., Reader, J., and NIST ASD Team (2012). NIST Atomic Spectra Database (ver. 5.0), [Online]. Available: http://physics.nist.gov/asd [2012, September 14]. National Institute of Standards and Technology, Gaithersburg, MD.
    produced as a part of the 'CHIANTI' atomic database for astrophysical spectroscopy
     K. Dere (GMU) - 2013 May 26
     
    

  3. o_2.wgfa (radiative data)
  4. 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_2.wgfa.tayal
    %A values ground configuration: Zeippen, C.J., 1987, A&A, 173, 410
    http://adsabs.harvard.edu/abs/1987A%26A...173..410Z
    %Theoretical oscillator strengths and A-values of allowed lines:  Tayal, S. S., 2007, ApJS, 171, 331
    http://adsabs.harvard.edu/abs/2007ApJS..171..331T
    Observed wavelengths:  Kramida, A., Ralchenko, Yu., Reader, J., and NIST ASD Team (2012). NIST Atomic Spectra Database (ver. 5.0), [Online]. Available: http://physics.nist.gov/asd [2012, September 14]. National Institute of Standards and Technology, Gaithersburg, MD.
    produced as a part of the 'CHIANTI' atomic database for astrophysical spectroscopy consortium
    K. Dere (GMU) - 2013 May 26
     minimum branching ratio =   1.00e-04
    

  5. o_2.scups (electron collision data)
  6. contains the effective electron collision strengths scaled according to the rules formulated by Burgess and Tully (1992).

     
    %filename:  o_2.upsdat
    %Collision strengths (1-35):  Tayal, S. S., 2007, ApJS, 171, 331
    http://adsabs.harvard.edu/abs/2007ApJS..171..331T
    in Table3 of Tayal, the indices for levels 4 and 5 have been reversed per Kisielius et al.
    Kisielius, R., Storey, P. J., Ferland, G. J., Keenan, F. P., Electron-impact excitation of OII fine-structure levels, 2009, MNRAS, 397,903
    http://adsabs.harvard.edu/abs/2009MNRAS.397..903K
    collision strengths give at temperatures (K) of 2.e+3, 4.e+3, 6.e+3, 8.e+3, 1.e+4, 1.5e+4, 2.e+4, 3.e+4, 4.e+4, 5.e+4, 1.e+5
    produced as a part of the 'CHIANTI' atomic database for astrophysical spectroscopy
    K. Dere (GMU) - 2012 March 13
    
    

  7. (proton collisional data) Not available in this VERSION.

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

    o_2_table.html (html table)

    Page created by Giulio Del Zanna on Fri Sep 18 13:29:20 2015