P VIII - VERSION 5.1

The CHIANTI database consists of 4 primary ASCII files for each ion in the database.

• p_8.elvlc (energy levels)

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

  References:

  %observed energy levels: Edlen, B., 1983, Phys. Scr., 28, 51
  %theoretical energy levels: Landi, E., 2005, A&A, 434, 365
  %produced as part of the Arcetri/Cambridge/NRL 'CHIANTI' atomic data base collaboration
  %
  % E. Landi - Apr 2003
  

  
  

• p_8.wgfa (radiative data)

  contains wavelengths, gf and A values for each transition. Wavelengths are based on experimental level energies where available; wavelengths calculated from theoretical energies are less accurate and are given as negative values.

  References:

  %observed energy levels: Edlen, B., 1983, Phys. Scr., 28, 51
  %Radiative data transition within the ground configuration: Tachiev, G.I., Froese Fischer, C., 2002, A&A. 385, 716
  %Radiative data 3-4 and 4-5 transitions: Froese Fischer, C., Saha, H.P., 1983, Phys. Rev. A., 28, 3169
  %Radiative data allowed transitions: Landi, E. 2005, A&A, 434, 365
  % Comment: A values for transitions 3-4 and 4-5 have been corrected to account for observed level energies.
  %produced as part of the Arcetri/Cambridge/NRL 'CHIANTI' atomic data base collaboration
  %
  % E. Landi - Apr 2003
  

  
  

• p_8.splups (electron collision data)

  contains the spline fits to the electron collision strengths scaled according to 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.

  References:

  
  %filename: p_8.splups
  %Oscillator strengths: Zhang, H.L., Sampson, D.H., 2002, ADNDT, 82, 357
  %Collision strengths: Zhang, H.L., Sampson, D.H., 2002, ADNDT, 82, 357
  %produced as part of the Arcetri/Cambridge/NRL 'CHIANTI' atomic data base collaboration
  %
  % Enrico Landi - Mar 2003
  

  
  

• p_8.psplups (electron collision data)

  contains the spline fits to the scaled proton collision strengths.

  References:

  
  %filename: p_8.psplups
  %rates: Landman, D.A., ApJ 240, 709, 1980
  %energies: Observed energies from CHIANTI .elvlc file
  %produced as part of the Arcetri/Cambridge/NRL 'CHIANTI' atomic data base collaboration
  %
  % Peter Young   8-Jun-2001
  

  
  

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

  
  

• p_8_table.html (html table)