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: http://www.arcetri.astro.it/science/chianti/chianti_5.1/database/ar/ar_18.html
Дата изменения: Thu Sep 15 16:54:17 2005 Дата индексирования: Sat Dec 22 14:02:55 2007 Кодировка: |
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:
%energy levels: Martin, W.C., Sugar, J., Musgrove, A., Dalton, G.R., 1995, NIST Database for Atomic Spectroscopy, Version 1.0, NIST Standard Reference Database 61. %comment: 35699780 Limit %comment: Theoretical energies are the same as the observed ones %produced as part of the Arcetri/Cambridge/NRL 'CHIANTI' atomic data base collaboration CHIANTI % % K.P.Dere 1999
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:
% A values: Parpia, F.A., Johnson, W.R., 1982, Phys. Rev. A, 26, 1142 %energy levels: Martin, W.C., Sugar,J., Musgrove,A., Dalton, G.R., 1995, NIST Database for Atomic Spectroscopy, Version 1.0, NIST Standard Reference Database 61 %oscillator strengths: Wiese,W.L., Smith,M.W., Glennon,B.M., 1966, Atomic Transition Probabilities, NSRDS-NBS-4 %comment: hydrogenic f values %produced as part of the Arcetri/Cambridge/NRL 'CHIANTI' atomic data base collaboration % % K.P.Dere 1998
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_18.splups %oscillator strengths: Wiese,W.L., Smith,M.W., Glennon,B.M., 1966, Atomic Transition Probabilities, NSRDS-NBS-4 %comment: hydrogenic f values %effective collision strengths: interpolation of R-matrix calculations of Aggarwal,K.M., Kingston,A.E., 1991-1993 %comment: effective collision strengths are most accurate in the temperature range 5.0 < LogT < 7.0 %produced as part of the Arcetri/Cambridge/NRL 'CHIANTI' atomic data base collaboration % % K.P.Dere - Aug 1998