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: http://www.arcetri.astro.it/science/chianti/chianti_5.1/database/ca/ca_18d.html
Дата изменения: Thu Sep 15 16:54:56 2005 Дата индексирования: Sat Dec 22 14:09:01 2007 Кодировка: Поисковые слова: reflection nebula |
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:
%observed energy levels: Sugar, J., Corliss, C., 1979, J.Phys.Chem.Ref.Data, 8, 865 %observed energy levels: Kelly, R.L., 1987, J.Phys.Chem.Ref.Data, 16, Suppl. 1 %comments: 4s, 4p and 4p levels from Kelly %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: additional observed energies 36 21 1s2s2p(1P) 2 1 P* 1.5 4 31352000. 285.700447 0. 0.000000 37 22 1s2p2 2 2 D 1.5 4 31484000. 286.903319 0. 0.000000 38 22 1s2p2 2 2 D 2.5 6 31486000. 286.921544 0. 0.000000 39 22 1s2p2 2 1 P 1.5 4 31551000. 287.513868 0. 0.000000 %produced as part of the Arcetri/Cambridge/NRL 'CHIANTI' atomic data base collaboration % % Ken Dere Jan 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:
%observed energy levels: Sugar, J., Corliss, C., 1979, J.Phys.Chem.Ref.Data, 8, 865 %observed energy levels: Kelly, R.L., 1987, J.Phys.Chem.Ref.Data, 16, Suppl. 1 %comments: 4s, 4p and 4p levels from Kelly %theoretical energy levels: Zhang, H.L., Sampson, D.H., Fontes, C.J., 1990, ADNDT, 44, 31 %oscillator strengths: Zhang, H.L., Sampson, D.H., Fontes, C.J., 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. %A values (Transitions between n=2 to 1s2lnl): calculations of Cornille reported in Kato et al., 1997, ADNDT, 67, 225 %comment: the following lines identified by Feldman, U., Doschek, G., Kreplin, R.W., 1980, ApJ, 238, 365 3 39 3.2033 1.342e+00 2.180e+14 1s22p 2P1.5 - 1s2p(3P)2p 2P1.5 (a) 2 43 3.2066 6.152e-01 9.980e+13 1s22p 2P0.5 - 1s2p(1P)2p 2D1.5 (k) %comment: theoretical energies have been used as experimental values for the dielectronic transitions %comment: correction (E.Landi - Nov 2003): replaced 4.02 wavelengths for innershell lines with Safronova's values. It slightly improves the positions of Ca XVIIId lines at around 3.2 A. %comment: level identification for levels 80, 86, 91, 97 in Cornille's data are uncertain %produced as part of the Arcetri/Cambridge/NRL 'CHIANTI' atomic data base collaboration % % Ken Dere and Enrico Landi - Aug 2004
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: ca_18d.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