S XIV d - VERSION 4.0

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

• s_14d.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: Martin, W.C., Zalubas, R., Musgrove, A., 1990, J.Phys.Chem.Ref.Data, 19, 821
  %Theoretical energy levels: Zhang, H.L., Sampson, D.H., Fontes, C.J., 1990, ADNDT, 44, 31
  %comment: 6l energy levels are a rough estimate
  %comment: S XV (1S<0>) Limit: 5702400    
  %energy levels (above IP): calculations of Safronova reported in Kato et al., 1997, ADNDT, 67, 225
  %produced as part of the Arcetri/Cambridge/NRL 'CHIANTI' atomic data base collaboration
  %
  % Ken Dere   Jan 1999
  

  
  

• s_14d.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: Martin, W.C., Zalubas, R., Musgrove, A., 1990, J.Phys.Chem.Ref.Data, 19, 821
  %Theoretical energy levels: Zhang, H.L., Sampson, D.H., Fontes, C.J., 1990, ADNDT, 44, 31
  %energy levels (above IP): calculations of Safronova reported in Kato et al., 1997, ADNDT, 67, 225
  %comment:  6l energy levels are a rough estimate
  %oscillator strengths: H.L. Zhang, D.H. Sampson, C.J. Fontes, 1990, ADNDT, 44, 31
  %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
  %note:  hydrogenic f values
  %A values (above IP):  calculations of Safronova reported in Kato et al., 1997, ADNDT, 67, 225
  %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   Jan 1999
  

  
  

• s_14d.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: s_14d.splups
  %collision strength values from calculations of Safronova reported in Kato et al., 1997, ADNDT, 67, 225
  %produced as part of the Arcetri/Cambridge/NRL 'CHIANTI' atomic data base collaboration
  %
  % Ken Dere - Jan 1999
  

  
  

• s_14d.psplups (electron collision data) - Not Present in CHIANTI 4

  contains the spline fits to the scaled proton collision strengths.