S IX - VERSION 4.0

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

• s_9.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 (n=2,3 levels): Fuhr, J.R., et al., "NIST Atomic Spectra Database" ver. 2.0
      March 1999. NIST Physical Reference Data
  %observed energy levels (levels 11,12,71,77): Kelly,R.L., 1987, J.Phys.Chem.Ref.Data 16, Suppl. 1
  %observed energy levels (levels 23,24,38->40,46,57,59-60,63,75): Jupen, C., Engstrom, L., 1997, Phys.Scr., 56, 592
  %observed energy levels (levels 17->21,28-29,31-34,41-42,61-62): Kink, I., Jupen, C., Engstrom, L., 
      Feldman, U., Laming, M.J., Schuhle, U., 1997, ApJ, 487, 956
  %theoretical energy levels (n=2,3 levels): Bhatia, A.K., Landi, E., 2002, ADNDT, in press
  %Comment: The energies of levels 81 and 84 (2p3.(2P).3d 1D2 and 3D2 respectively) have been
             exchanged to correctly match theoretical energies.
  %produced as part of the Arcetri/Cambridge/NRL 'CHIANTI' atomic data base collaboration
  %
  %E. Landi - Sep 2001
  

  
  

• s_9.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 (n=2,3 levels): Fuhr, J.R., et al., "NIST Atomic Spectra Database" ver. 2.0
       March 1999. NIST Physical Reference Data
  %observed energy levels (levels 11,12,71,77): Kelly,R.L., 1987, J.Phys.Chem.Ref.Data 16, Suppl. 1
  %observed energy levels (levels 17->21,23,24,28,29,31->34,38->42,46,57,59->63,75): Jupen, C.,
       Engstrom, L., 1997, Phys.Scr., 56, 592
  %theoretical energy levels (n=2,3 levels): Bhatia, A.K., Landi, E., 2002, ADNDT, in press
  %Radiative data: Bhatia, A.K., Landi, E., 2002, ADNDT, in press
  %produced as part of the Arcetri/Cambridge/NRL 'CHIANTI' atomic data base collaboration
  %
  % E. Landi - Oct 2001
  

  
  

• s_9.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_9.omdat
  %oscillator strengths: Bhatia, A.K., Landi, E., 2002, ADNDT, in press
  %collision strengths: Bhatia, A.K., Landi, E., 2002, ADNDT, in press
  %produced as part of the Arcetri/Cambridge/NRL "CHIANTI" atomic database collaboration
  %
  % E. Landi - Sep 2001
  

  
  

• s_9.psplups (electron collision data)

  contains the spline fits to the scaled proton collision strengths.

  References:

  
  %file: s_9.psplups
  %rates: Ryans R.S.I., Keenan F.P., Reid R.H.G., unpublished.
  %energies: Observed values, from .elvlc file
  %comment: Fits valid for temperatures 3e5 to 1e7 K.
  %produced as part of the Arcetri/Cambridge/NRL 'CHIANTI' atomic data base collaboration
  %
  % Peter Young   15-May-2001
  

The html tables below contain the radiative data of all the lines sorted in wavelength