| Home | Download | Help | User Guides | Direct access | News - History | Applications |
|---|---|---|---|---|---|---|
| Team | Line Lists | Links | ADS Citations | Acknowledging CHIANTI | CHIANTI papers | CHIANTI and other codes |
The CHIANTI database consists of the following primary ASCII files for this ion:
contains the energy levels in cm^(-1) It includes both experimental and theoretical values of the levels energies.
%energy levels (n=2): 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.
%energy levels (n=3): Khardi et al, 1994, Physica Scripta, 49, 571
%Theoretical energy levels (n=2): Zhang, Sampson, ADNDT, 1992 , 52, 143
%theoretical energy levels (n=3): Sampson, D.H., Goett, S.J., Clark, R.E.H., 1984, ADNDT, 30, 125
%produced as part of the Arcetri/Cambridge/NRL atomic data base collaboration
%
% K.P.Dere (n=3 levels June 97); E.Landi Mar 2001 (n=2 levels)
contains wavelengths, gf and A values of the transitions. The wavelengths are based on the experimental energy levels and should be the best available. Wavelengths calculated from the theoretical energies are of an indeterminate accuracy and their values are presented as negative values of the calculated wavelength.
%energy levels (n=2): Fuhr, J.R., et al. 1999 "NIST Atomic Spectra Database"
Ver. 2.0 March 1999. NIST Physical Reference Data.
%energy levels (n=3): Khardi et al, 1994, Physica Scripta, 49, 571
%theoretical energy levels (n=2): Sampson, D.H., Goett, S.J., Clark, R.E.H., 1984, ADNDT, 30, 125.
%Allowed transitions oscillator strengths (n=2): Zhang, Sampson, ADNDT, 1992 , 52, 143
%Allowed transitions oscillator strengths (n=3): Sampson, Goett, Clark, 1984, ADNDT, 30, 125
%comment:transitions 1-4, 3-4, 3- 10 have been interpolated from
the data of Be-like ions in Muhlethaler, Nussbaumer, A&A, 1976, 48, 109
%comment: gf values for transitions 19-26 and 23-26 were simply taken to be
equal to the O V gf values reported by Hibbert, 1980, J. Phys. B, 13, 1721.
The A values were obtained from the gf values by using the wavelengths listed.
%produced as part of the Arcetri/Cambridge/NRL 'CHIANTI' atomic data base collaboration CHIANTI
%
% E.Landi Mar 2001 (n=2); n=3 levels added by K.P. Dere Jun 1996
contains the spline fits to the electron collision strengths scaled according the rules formulated by 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.
%filename: ar_15.splups %oscillator strengths (n=2): Zhang, Sampson, 1992, ADNDT, 52, 143 %oscillator strengths (n=3): Sampson, Goett, Clark, 1984, ADNDT, 30, 125 %Effective collision strengths (n=2): Keenan, F.P., 1988, Phys.Scripta, 37, 57 %collision strengths (n=3): Sampson, D.H., Goett, S.J., Clark, R.E.H., 1984, ADNDT, 30, 125 %comment: Have derived the upsilon data from Table VII of Keenan et al. The Delta-E's have been taken from the observed values in the .elvlc file. The gf values are from the .wgfa file. The upsilons have been created for logT=5.7-7.3 in 0.1 dex intervals. %produced as part of the Arcetri/Cambridge/NRL 'CHIANTI' atomic data base collaboration % % Enrico Landi March 2001 (n=2), K.P.Dere Jun 1996 (n=3)
contains the spline fits to the scaled proton collision strengths.
%file: ar_15.psplups %rates: Ryans R.S.I., Foster-Woods V.J, Copeland F., Keenan F.P., Matthews A., Reid R.H.G., 1998, ADNDT 70, 179-229 %energies: Bhatia A.K., Feldman U., Seely J.F., 1986, ADNDT 35, 449-472 %comment: Fits valid for temperatures 8e5 to 1.75e8 K. %produced as part of the Arcetri/Cambridge/NRL 'CHIANTI' atomic data base collaboration % % Peter Young 24-Oct-00