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: http://www.arcetri.astro.it/science/chianti/chianti_5.1/database/ar/ar_4.html
Дата изменения: Thu Sep 15 16:58:29 2005 Дата индексирования: Sat Dec 22 13:59:06 2007 Кодировка: Поисковые слова: п п п п п п п п п п п п п п п п п п |
The CHIANTI database consists of 4 primary ASCII files for each ion in the database.
contains the energy levels in cm^(-1) It includes both experimental data and theoretical values of the levels energies.
References:
%experimental 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: Ramsbottom et al 1997, MNRAS, 284, 754
%produced as part of the Arcetri/Cambridge/NRL 'CHIANTI' atomic data base collaboration
%
% E.Landi - Aug 2001
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:
%experimental energy levels: Fuhr, J.R., et al., "NIST Atomic Spectra Database" Ver. 2.0,
March 1999, NIST Physical Reference Data.
% Theoretical energy levels: Ramsbottom et al 1997, MNRAS, 284, 754
% Radiative data: SUPERSTRUCTURE calculation, including 25 configurations.
% Comment: the configurations included in the SUPERSTRUCTURE calculation are:
3s2.3p3, 3s2.3p2.3d, 3s2.3p.3d2, 3s2.3d3
3s.3p4, 3s.3p3.3d, 3s.3p2.3d2, 3s.3p.3d3
3p2.3d3, 3p3.3d2, 3p4.3d, 3p5
3s2.3p3.4l with l=s,p,d,f
3s.3p3.4l with l=s,p,d,f
3p4.4l with l=s,p,d,f
Radiative data have been calculated using experimental energy values.
%produced as part of the Arcetri/Cambridge/NRL 'CHIANTI' atomic data base collaboration
%
% Enrico Landi - Aug 2001
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: ar_4.splups
%Oscillator strengths: SUPERSTRUCTURE calculation, including 25 configurations.
%Effective collision strengths ground configuration: Ramsbottom et al 1997, MNRAS, 284, 754
%Effective collision strengths other configurations: Ramsbottom & Bell, 1997, 66, 65
% Comment: the configurations included in the SUPERSTRUCTURE calculation are:
3s2.3p3, 3s2.3p2.3d, 3s2.3p.3d2, 3s2.3d3
3s.3p4, 3s.3p3.3d, 3s.3p2.3d2, 3s.3p.3d3
3p2.3d3, 3p3.3d2, 3p4.3d, 3p5
3s2.3p3.4l with l=s,p,d,f
3s.3p3.4l with l=s,p,d,f
3p4.4l with l=s,p,d,f
Radiative data have been calculated using experimental energy values.
%Comment: the collisional data are provided in the temperature range 3.0 < Log T < 6.0
%Comment: correction (June 2003): added collisional transitions including levels 17 and 25.
They slightly affect the population balance at electron densities > 10^12 cm^-3.
% produced as part of the Arcetri/Cambridge/NRL 'CHIANTI' atomic data base collaboration
%
% Enrico Landi - Jun 2003