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: http://www.arcetri.astro.it/science/chianti/chianti_5.1/database/mg/mg_8.html
Дата изменения: Thu Sep 15 16:55:37 2005 Дата индексирования: Sat Dec 22 13:59:19 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:
%observed energy levels (n=2): Edlen, B, 1983, Phys. Scripta, 28, 483 %observed energy levels (n=3): Martin,W.C., Zalubas,R., 1980, J.Phys.Chem.Ref.Data, 9, 1. %theoretical energy levels (n=2): Zhang,H.L., Graziani,M., Pradhan,A.K., 1994, A&A, 283, 319. %theoretical energy levels (n=3): Sampson and Zhang, 1995, unpublished calculations %comment: energy levels renumbered %produced as part of the Arcetri/Cambridge/NRL 'CHIANTI' atomic data collaboration % % K.P.Dere and E.Landi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:
%observed energy levels (n=2): Edlen, B, 1983, Phys. Scripta, 28, 483 %observed energy levels (n=3): Martin, W.C., Zalubas, R., 1980, J.Phys.Chem.Ref.Data, 9, 1. %oscillator strengths: Dankwort,W., Trefftz,E., 1978, A&A, 65, 93. %oscillator strengths: Bhatia,A.K., Feldman,U., Seely,J.F., 1986, ADNDT, 35, 319. %oscillator strengths (16- 125): Sampson and Zhang, 1995, unpublished calculations %note: gf and A values for transitions 123-71 and 124-72 are estimates % produced as part of the Arcetri/Cambridge/NRL 'CHIANTI' atomic data base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: mg_8.splups %oscillator strengths: Dankwort,W., Trefftz,E., 1978, A&A, 65, 93. %oscillator strengths: Bhatia,A.K., Feldman,U., Seely,J.F., 1986, ADNDT, 35, 319 %oscillator strengths (16 - 125): Sampson and Zhang, 1995, unpublished calculations %effective collision strengths (1 - 15): Zhang, H.L., Graziani, M., Pradhan, A.K., 1994, A&A, 283, 319 %collision strengths (16 - 125): Sampson and Zhang, 1995, unpublished calculations %comment: effective collision strengths were provided in the temperature range 3.7 < Log T < 6.4 % produced as part of the Arcetri/Cambridge/NRL 'CHIANTI' atomic data base collaboration % % K.P. Dere 1995
contains the spline fits to the scaled proton collision strengths.
References:
%filename: mg_8.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 1e5 to 2.5e6 K. %produced as part of the Arcetri/Cambridge/NRL 'CHIANTI' atomic data base collaboration % % Peter Young 15-May-2001