C IV - VERSION 5.1

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

• c_4.elvlc (energy levels)

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

  References:

  %energy levels: Fuhr, J.R., Kelleher, D.E., Martin, W.C., Musgrove, A., Sugar, J., Wiese, W.L.,
          Dalton, G.R., Dragoset, R.A., Mohr, P.J., Olsen, K., Reader, J., Saloman, E.B., Sansonetti, C.J.,
          Wiersma, G., "NIST Atomic Spectra Database" Ver. 2.0, March 1999, NIST Physical Reference Data.
  % Theoretical energy levels: Badnell, N.R., Pindzola, M.S., 2000, J.Phys.B, 33, 1013
  %produced as part of the Arcetri/Cambridge/NRL 'CHIANTI' atomic data base collaboration
  %
  % E. Landi Jun 2001
  

  
  

• c_4.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.
  %oscillator strengths: Martin, I., Karwowski, J., Diercksen, G.H.F., Barrientos, C., 1993, A&AS, 100, 595.
  %oscillator strengths: W.L. Wiese, M.W. Smith, B.M. Glennon, Atomic Transition Probabilities, 
      Vol I, NSRDS-NBS 4, 1966.
  %produced as part of the Arcetri/Cambridge/NRL 'CHIANTI' atomic data base collaboration
  %
  % E.Landi Jun 2001
  

  
  

• c_4.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_4.splups
  %oscillator strengths: Martin, I., Karwowski, J., Diercksen, G.H.F., Barrientos, C., 1993, A&AS, 100, 595
  %oscillator strengths: W.L. Wiese, M.W. Smith, B.M. Glennon, Atomic Transition Probabilities,
      Vol I, NSRDS-NBS 4, 1966
  %collision strengths: Badnell, N.R., Pindzola, M.S., 2000, J.Phys.B, 33, 1013
  %comment: the original effective collision strengths are provided in LS coupling. These 
      have been transformed into intermediate coupling effective collision strengths 
      according to the statistical weights
  %comment: the original data are given in the temperature range 4.2 < Log T < 6.5.
  %produced as part of the Arcetri/Cambridge/NRL 'CHIANTI' atomic data base collaboration
  %
  % Enrico Landi Jun 2001
  

  
  

• c_4.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_4_table.html (html table)