C IV d - VERSION 5.1

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

• c_4d.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: Kelly, R.L., 1987, J.Phys.Chem.Ref.Data 16, Suppl. 1
  %theoretical energy levels: Burke, V.M., 1992, J.Phys.B, 25, 4917
  %energy levels (above IP): Vainshtein, L.A., Safronova, U.I., 1978, ADNDT, 21, 49
     and 1980, ADNDT, 25, 311 - updated by U.I. Safronova, 1999
  %produced as part of the Arcetri/Cambridge/NRL 'CHIANTI' atomic data base collaboration
  %
  % Ken Dere - Feb 2002
  

  
  

• c_4d.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: Fuhr, J.R., et al., "NIST Atomic Spectra Database" Ver. 2.0, 
     March 1999, NIST Physical Reference Data
  %observed energy levels: Kelly, R.L., 1987, J.Phys.Chem.Ref.Data 16, Suppl. 1
  %theoretical energy levels: Badnell, N.R., Pindzola, M.S., 2000, J.Phys.B, 33, 1013
  %energy levels (above IP): Vainshtein, L.A., Safronova, U.I., 1978, ADNDT, 21, 49
     and 1980, ADNDT, 25, 311 - updated by U.I. Safronova, 1999
  %oscillator strengths: W.L. Wiese, M.W. Smith, B. M. Glennon, Atomic Transition Probabilities, 
     Vol I, Hydrogen Through Neon, NSRDS-NBS 4, 1966
  %oscillator strengths: Martin, I., Karwowski, J., Diercksen, G.H.F., Barrientos, C., 1993, A&AS, 100, 595
  %oscillator strengths: Wiese, W.L., Smith, M.W., Glennon, B.M., 1966, Atomic Transition Probabilities, NSRDS-NBS-4
  %comment:  hydrogenic f values
  %A values (above IP): Vainshtein, L.A., Safronova, U.I., 1978, ADNDT, 21, 49
     and 1980, ADNDT, 25, 311 - updated by U.I. Safronova, 1999
  %comment: theoretical energies have been used as experimental values for the dielectronic transitions
  %produced as part of the Arcetri/Cambridge/NRL 'CHIANTI' atomic data base collaboration
  %
  %   Ken Dere - Feb 2000
  

  
  

• c_4d.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: c_4d.splups
  %collision strengths: from updated autoionization rates of Vainshtein, L.A., Safronova, U.I., 1978, ADNDT, 21, 49
     and 1980, ADNDT, 25, 311 - updated by U.I. Safronova, 1999
  %produced as part of the Arcetri/Cambridge/NRL 'CHIANTI' atomic data base collaboration
  %
  % Ken Dere - Feb 2000
  

  
  

• c_4d.psplups (electron collision data) - Not Present in CHIANTI 5.1

  contains the spline fits to the scaled proton collision strengths.
  

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

  
  

• c_4d_table.html (html table)