N II - VERSION 8.0


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

  1. n_2.elvlc (energy levels)
  2. contains the energy levels (in cm-1). It includes both experimental and theoretical values of the levels energies.

     
    %filename:  n_2.elvlc
    %Theoretical energy levels (1-58):  Tayal, S. S., 2011, ApJS, 195,12
    http://adsabs.harvard.edu/abs/2011ApJS..195...12T
    
    %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) - 2012 October 05
     
    

  3. n_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:  n_2.wgfa.tayal.tachiev.nist5.young
    
    %Theoretical A-values levels (1-58):  Tayal, S. S., 2011, ApJS, 195,12
    http://adsabs.harvard.edu/abs/2011ApJS..195...12T
    
    %Theoretical A-values (levels 1-5):  Tachiev, G., Froese Fischer, C., 2001, Canadian Journal of Physics, 79, p.955-976
    http://adsabs.harvard.edu/abs/2001CaJPh..79..955T
    
    %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.
    
    %Observed wavelengths (2-5, 4-5, 2-6):  Young, P.R., Feldman, U., Lobel, A., 2011, ApJS, 196, 23
    ADSref:  http://adsabs.harvard.edu/abs/2011ApJS..196...23Y
    
    produced as a part of the 'CHIANTI' atomic database for astrophysical spectroscopy consortium
    K. Dere (GMU) - 2012 March 19
     minimum branching ratio =   1.00e-04
    

  5. n_2.scups (electron collision data)
  6. contains the effective electron collision strengths scaled according to the rules formulated by Burgess and Tully (1992).

     
    %filename:  n_2.upsdat
    %Collision strengths:  Tayal, S. S., 2011, ApJS, 195,12
    http://adsabs.harvard.edu/abs/2011ApJS..195...12T
    effective collision strengths were provided between 5.0e+2 and 1.e+5 K
    produced as a part of the 'CHIANTI' atomic database for astrophysical spectroscopy
    K. Dere (GMU) - 2012 January 10
    
    

  7. n_2.psplups (proton collision data)
  8. contains the spline fits to the scaled proton collision strengths.

     
    
    %filename: n_2.psplups
    %rates: Ryans R.S.I., Foster-Woods V.J, Keenan F.P., Reid R.H.G., 1999, ADNDT 73, 1-42
    %energies: Wiese W.L., Fuhr J.R., Deters T.M., 1996, J. Phys. Chem. Ref. Data, Monograph 7
    %comment: Fits valid for temperatures 8e3 to 1e6 K.
    %produced as part of the Arcetri/Cambridge/NRL 'CHIANTI' atomic data base collaboration
    %
    % Peter Young   15-May-2001
    


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

    n_2_table.html (html table)

    Page created by Giulio Del Zanna on Fri Sep 18 13:28:33 2015