Ar VII - VERSION 8.0


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

  1. ar_7.elvlc (energy levels)
  2. contains the energy levels (in cm-1). It includes both experimental and theoretical values of the levels energies.

     
    %filename: ar_7.elvlc                              
    %energy levels: Phillips, L.W., & Parker, W.L. 1941, Phys. Rev., 60, 301
    %energy levels (6,13,14,16): Ralchenko, Y. et al., NIST Atomic Spectra Database, Version 3.0
    %theoretical energy levels: Pradhan, Ph.Rev.A, 34, 4704, 1986
    %comment: Energies of triplet levels from Phillips & Parker have been scaled relative to the
              ground level using the wavelength of the 3s.3p 3P1-3s2 1S0 transition reported
              in the SUMER solar disk atlas (877.92 A - Curdt et al. 2001, A&A, 375, 591).
    %produced as part of the Arcetri/Cambridge/NRL 'CHIANTI' atomic data base collaboration
    %
    % E. Landi - Nov 2006
     
    

  3. ar_7.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: ar_7.wgfa
    %energy levels: Phillips, L.W., & Parker, W.L. 1941, Phys. Rev., 60, 301
    %energy levels (6,13,14,16): Ralchenko, Y. et al., NIST Atomic Spectra Database, Version 3.0
    %oscillator strengths: Christensen et al, 1986, Ph.Rev.A, 4704, 34
    % A values (3:4): 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 (1:4): Calculated using SUPERSTRUCTURE and the same atomic model adopted
       by Christensen, Norcross, Pradhan, 1986, Ph.Rev.A, 34, 4704,
    %comment: Energies of triplet levels from Phillips & Parker have been scaled relative to the
              ground level using the wavelength of the 3s.3p 3P1-3s2 1S0 transition reported
              in the SUMER solar disk atlas (877.92 A - Curdt et al. 2001, A&A, 375, 591).
    %produced as part of the Arcetri/Cambridge/NRL 'CHIANTI' atomic data base collaboration
    %
    % E. Landi - Nov 2006
    

  5. ar_7.scups (electron collision data)
  6. contains the effective electron collision strengths scaled according to the rules formulated by Burgess and Tully (1992).

     
    %filename: ar_7.splups
    %oscillator strengths: Christensen et al, 1986, Ph.Rev.A, 4704, 34
    %collision strengths: Pradhan, 1986, Ph.Rev.A, 4704, 34
    %produced as part of the Arcetri/Cambridge/NRL 'CHIANTI' atomic data base collaboration
    %
    % E. Landi 1995
    
    

  7. ar_7.psplups (proton collision data)
  8. contains the spline fits to the scaled proton collision strengths.

     
    
    %filename: ar_7.psplups
    %rates: Landman, D.A., Brown, T., 1979, ApJ 232, 636
    %energies: Observed energies from CHIANTI .elvlc file.
    %produced as part of the Arcetri/Cambridge/NRL 'CHIANTI' atomic data base collaboration
    %
    % Peter Young   18-May-2001
    


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

    ar_7_table.html (html table)

    Page created by Giulio Del Zanna on Fri Sep 18 13:25:18 2015