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: http://www.arcetri.astro.it/science/chianti/chianti_5.1/database/n/n_1.html
Дата изменения: Thu Sep 15 16:56:30 2005 Дата индексирования: Sat Dec 22 13:49:26 2007 Кодировка: Поисковые слова: iss |
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: Fuhr, J.R., Kelleher, D.E., Martin, W.C., Musgrove, A., Sugar, J., Wiese, W.L., Dalton, G.R., Dragoset, R.A., Mohr, P.J., Olsen, K., Reader, J., Saloman, E.B., Sansonetti, C.J., Wiersma, G., "NIST Atomic Spectra Database" Ver. 2.0, March 1999, NIST Physical Reference Data. %Theoretical energy levels: Hibbert, A., Biemont, E., Godefroid, M., Vaeck, N., 1991, A&ASS, 88, 505 %produced as part of the Arcetri/Cambridge/NRL 'CHIANTI' atomic data base collaboration % % E.Landi - Jul 2001
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: Fuhr, J.R., et al., "NIST Atomic Spectra Database" Ver. 2.0, March 1999, NIST Physical Reference Data. %Theoretical energy levels: Hibbert, A., Biemont, E., Godefroid, M., Vaeck, N., 1991, A&ASS, 88, 505 %Radiative data for transitions within the ground configurations: Fuhr, J.R., et al., "NIST Atomic Spectra Database" Ver. 2.0, March 1999, NIST Physical Reference Data. %Radiative data all other transitions: Hibbert, A., Biemont, E., Godefroid, M., Vaeck, N., 1991, A&AS, 88, 505 %produced as part of the Arcetri/Cambridge/NRL 'CHIANTI' atomic data base collaboration % % Enrico Landi Jul 2001
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: n_1.splups %oscillator strengths: Hibbert, A., Biemont, E., Godefroid, M., Vaeck, N., 1991, A&AS, 88, 505 %effective collision strengths: Tayal, S.S., 2000, ADNDT, 76, 191 %Comment: the effective collision strengths of transitions 1-23 and 1-24 were found be to incorrect % (Tayal S.S., 2001, private communications) and more accurate values have been kindly provided % by the author, and they replace the published values. %Comment: the effective collision strengths were provided in the temperature range 3.0 < Log T < 5.75 %comment: added collision data for transitions involving level 5. The changes in level populations should be minimal for electron densities lower than 10^12 cm^3 (Jun 2003). % produced as part of the Arcetri/Cambridge/NRL 'CHIANTI' atomic data base collaboration % %Enrico Landi - Jun 2003