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: http://www.arcetri.astro.it/science/chianti/chianti_5.1/database/mg/mg_5.html
Дата изменения: Thu Sep 15 16:57:16 2005 Дата индексирования: Sat Dec 22 13:59:16 2007 Кодировка: Поисковые слова: п п р р р р р р р р р р р р р р |
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, Phisica Scripta, 28, 51 %observed energy levels (n=3): Fuhr, J.R., et al., "NIST Atomic Spectra Database" Ver. 2.0, March 1999, NIST Physical Reference Data %theoretical energy levels: Landi E. & Bhatia A.K., 2005, ADNDT, in press %comment: theoretical energies come from the 24-configuration calculation of Landi & Bhatia %produced as part of the Arcetri/Cambridge/NRL 'CHIANTI' atomic data base collaboration % %E. Landi - Feb 2004
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, Phisica Scripta, 28, 51 %observed energy levels (n=3): Fuhr, J.R., et al., "NIST Atomic Spectra Database" Ver. 2.0, March 1999, NIST Physical Referenc e Data %theoretical energy levels: Landi E. & Bhatia A.K., 2005, ADNDT, in press %A values and oscillator strengths: Landi E. & Bhatia A.K., 2005, ADNDT, in press %comment: theoretical energies, oscillator strengths and A values come from the 24-configuration calculation of Landi & Bhatia %produced as part of the Arcetri/Cambridge/NRL 'CHIANTI' atomic data base collaboration % % E. Landi - Feb 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: mg_5.splups %Oscillator strengths: Landi E. & Bhatia A.K. 2005, ADNDT, in press %effective collision strengths ground configuration T<10^5 :Butler, K., Zeippen, C.J., A&ASS, 1994, 108, 1 %effective collision strengths ground configuration T>10^6 : Landi E. & Bhatia A.K. 2005, ADNDT, in press %Collision strengths all other transitions: Landi E. & Bhatia A.K. 2005, ADNDT, in press %comment: close-coupling effective collision strengths from Butler & Zeippen have been merged with effective collision strengths derived from Bhatia A.K. & Landi, since Butler & Zeippen provide data only up to 10^5 K. This approximate treatment influences most the transitions within the ground term 3P, and less those involving the 1D and 1S singlets. %comment: oscillator strengths come from the 6-configuration calculation of Landi & Bhatia, for consistency with the collision strengths calculation %produced as part of the Arcetri/Cambridge/NRL 'CHIANTI' atomic data base collaboration % % E. Landi - Apr 2004
contains the spline fits to the scaled proton collision strengths.
References:
%filename: mg_5.psplups %rates: Ryans R.S.I., Keenan F.P., Reid R.H.G., unpublished. %energies: Observed values, from .elvlc file %comment: Fits valid for temperatures 8e4 to 4e6 K. %produced as part of the Arcetri/Cambridge/NRL 'CHIANTI' atomic data base collaboration % % Peter Young 15-May-2001