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: http://www.arcetri.astro.it/science/chianti/chianti_5.1/database/al/al_9.html
Дата изменения: Thu Sep 15 16:55:38 2005 Дата индексирования: Sat Dec 22 13:59:05 2007 Кодировка: Поисковые слова: eridanus |
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 (n=2): Edlen, B, 1983, Phys. Scripta, 28, 483 %energy levels (n=3): Martin,W.C., Sugar,J., Musgrove,A., Dalton,G.R., 1995, NIST Database Version 1.0. %theoretical energy levels: Sampson and Zhang, 1995, unpublished calculations %comment: observed energy of level 55 estimated by comparison with Sampson's values %produced as part of the Arcetri/Cambridge/NRL 'CHIANTI' atomic data base collaboration % % K.P.Dere and E.Landi 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:
%energy levels (n=2): Edlen, B, 1983, Phys. Scripta, 28, 483 %energy levels (n=3): Martin,W.C., Sugar,J., Musgrove,A., Dalton,G.R., 1995, NIST Database Version 1.0 %oscillator strengths (n=3): Sampson and Zhang, 1995, unpublished calculations %note: gf and A values for transitions O5-K1 and O6-K2 are estimates %oscillator strengths (1- 16): Dankwort, W., Trefftz, E., 1978, A&A, 65, 93. %oscillator strengths (1-2): Bhatia,A.K., Feldman,U., Seely,J.F., 1986, ADNDT, 35, 319. %produced as part of the Arcetri/Cambridge/NRL atomic data base collaboration % % K.P.Dere and E.Landi 1999
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: al_9.splups %effective collision strengths (1-15): Zhang, H.L., Graziani, M., Pradhan, A.K., 1994, A&A, 283, 319 %oscillator strengths (1-15): Dankwort, W., Trefftz, E., 1978, A&A, 65, 93 %collision strengths (16-125): Zhang & Sampson 1995, unpublished calculations % Comment: A small error was found in Zhang, H.L. et al 1994 upsilons, affecting upsilons for Al IX, Si X, S XII, Ar XIV, Ca XVI (and not lower-Z ions). The present data have been corrected by the authors. % Comment: Zhang, H.L. et al 1994 upsilons are provided in the 6.4x10^3 to 3.2x10^6 K temperature range. %produced as part of the Arcetri/Cambridge/NRL 'CHIANTI' atomic data base collaboration % % Enrico Landi - Aug 2001
contains the spline fits to the scaled proton collision strengths.
References:
%filename: al_9.psplups %rates: Foster VJ, Keenan FP, Reid RHG, ADNDT 67, 99, 1997 %energies: From .elvlc file, experimental energies %comment: The rate coefficients are in units cm^3/s. %comment: Fits valid for temperatures 2e5 to 3.5e6 K. %produced as part of the Arcetri/Cambridge/NRL 'CHIANTI' atomic data base collaboration % % Peter Young 15-May-2001