The CHIANTI database has the following primary ASCII files for this ion:
contains the energy levels (in cm-1). It includes both experimental and theoretical values of the levels energies.
%filename: fe_25.elvlc Theoretical energy levels: Autostructure calculation A Breit-Pauli distorted wave implementation for AUTOSTRUCTURE Badnell, N.R., 2011, Computer Physics Communications, 182, 1528 ADSref: http://adsabs.harvard.edu/abs/2011CoPhC.182.1528B observed energy levels 1s2p 1P1, 1s2p 3P1 Rudolph, J. K.; Bernitt, S.; Epp, S. W.; Steinbrugge, R.; Beilmann, C.; Brown, G. V.; Eberle, S.; Graf, A.; Harman, Z.; Hell, N.; Leutenegger, M.; Mueller, A.; Schlage, K.; Wille, H.-C.; Yavas, H.; Ullrich, J.; Crespo Loopez-Urrutia, J. R. X-Ray Resonant Photoexcitation: Linewidths and Energies of K alpha Transitions in Highly Charged Fe Ions Physical Review Letters, vol. 111, Issue 10, id. 103002 DOI: 10.1103/PhysRevLett.111.103002 adsRef: http://adsabs.harvard.edu/abs/2013PhRvL.111j3002R observed energy levels: 1s3p 1P1, 1s4p 1P1, 1s5p 1P1 Beiersdorfer, P.; Bitter, M.; von Goeler, S.; Hill, K. W. Physical Review A (General Physics), Volume 40, Issue 1, July 1, 1989, pp.150-157 doi:10.1103/PhysRevA.40.150 ADS: https://ui.adsabs.harvard.edu/abs/1989PhRvA..40..150B/abstract observed energy levels 1s2p 3P2 1s2 1S0 - 1s2p 3P2 6682.7 eV 53899600. (53899615.2) (listed as transition for 1s2 1S0 - 1s2p 3P1) Briand, J. P.; Tavernier, M.; Marrus, R.; Desclaux, J. P. Physical Review A (General Physics), Volume 29, Issue 6, June 1984, pp.3143-3149 doi:10.1103/PhysRevA.29.3143 ADSref: https://ui.adsabs.harvard.edu/abs/1984PhRvA..29.3143B/abstract (Observed) energy levels (1s2s, 1s2p): Artemyev, A. N.; Shabaev, V. M.; Yerokhin, V. A.; Plunien, G.; Soff, G., 2005, Phys. Rev. A, 72, 2104 ADSref: http://adsabs.harvard.edu/abs/2005PhRvA..71f2104A %observed energy levels: Martin, W. C., Sugar, J., Musgrove, A., and Dalton, G. R., 1995, NIST Database for Atomic Spectroscopy, Version 1.0, NIST Standard Reference Database 61. %theoretical energy levels: Sampson, D. H., Goett, S.J., Clark, R.E.H., 1983, ADNDT, 29, 467 Theoretical energies for n=2, 3 above IP Goryaev, F. F.; Vainshtein, L. A.; Urnov, A. M. Atomic data for doubly-excited states 2lnl of He-like ions and 1s2lnl of Li-like ions with Z = 6-36 and n = 2 , 3 2017, ADNDT, 113, 117-257 adsRef: http://adsabs.harvard.edu/abs/2017ADNDT.113..117G DOI: 10.1016/j.adt.2016.04.002 Theoretical energy levels (n=4,5 above IP): calculations of U. Safronova reported in Kato et al., 1997, ADNDT, 67, 225. ADS http://adsabs.harvard.edu/abs/1997ADNDT..67..225K updated by U. Safronova, 2001, private communication theoretical energy levels adjusted by SHFTIC file derived from Rudolph, Beiersdorfer, NIST, Artemyev, Goryaev (n=2, 3 above IP) and Safronova (n= 4,5,6 above IP energies K. Dere (GMU) - 2020 July 6 fe_25 IP ev = 8.82805e+03 Ip invcm = 71203000.000 Ip Ryd = 648.84946
contains wavelengths, gf and A values of the transitions. The wavelengths are based on the experimental energy levels and should be the best available. Wavelengths calculated from the theoretical energies are of an indeterminate accuracy and their values are presented as negative values of the calculated wavelength.
%filename: fe_25.wgfa Theoretical gf and A-values: Autostructure calculation A Breit-Pauli distorted wave implementation for AUTOSTRUCTURE Badnell, N.R., 2011, Computer Physics Communications, 182, 1528 ADSref: http://adsabs.harvard.edu/abs/2011CoPhC.182.1528B two-photon rate: Derevianko, A.; Johnson, W. R., 1997, Phys Rev A, 56, 1288 Two-photon decay of 2 1S0 and 2 3S1 states of heliumlike ions ADSref: https://ui.adsabs.harvard.edu/abs/1997PhRvA..56.1288D/abstract observed energy levels 1s2p 1P1, 1s2p 3P1 Rudolph, J. K.; Bernitt, S.; Epp, S. W.; Steinbrugge, R.; Beilmann, C.; Brown, G. V.; Eberle, S.; Graf, A.; Harman, Z.; Hell, N.; Leutenegger, M.; Mueller, A.; Schlage, K.; Wille, H.-C.; Yavas, H.; Ullrich, J.; Crespo Loopez-Urrutia, J. R. X-Ray Resonant Photoexcitation: Linewidths and Energies of K alpha Transitions in Highly Charged Fe Ions Physical Review Letters, vol. 111, Issue 10, id. 103002 DOI: 10.1103/PhysRevLett.111.103002 adsRef: http://adsabs.harvard.edu/abs/2013PhRvL.111j3002R observed energy levels: 1s3p 1P1, 1s4p 1P1, 1s5p 1P1 Beiersdorfer, P.; Bitter, M.; von Goeler, S.; Hill, K. W. Physical Review A (General Physics), Volume 40, Issue 1, July 1, 1989, pp.150-157 doi:10.1103/PhysRevA.40.150 ADS: https://ui.adsabs.harvard.edu/abs/1989PhRvA..40..150B/abstract (Observed) energy levels (1s2s, 1s2p): Artemyev, A. N.; Shabaev, V. M.; Yerokhin, V. A.; Plunien, G.; Soff, G., 2005, Phys. Rev. A, 72, 2104 ADSref: http://adsabs.harvard.edu/abs/2005PhRvA..71f2104A %observed energy levels: Martin, W. C., Sugar, J., Musgrove, A., and Dalton, G. R., 1995, NIST Database for Atomic Spectroscopy, Version 1.0, NIST Standard Reference Database 61. Theoretical energies for n=2, 3 above IP Goryaev, F. F.; Vainshtein, L. A.; Urnov, A. M. Atomic data for doubly-excited states 2lnl of He-like ions and 1s2lnl of Li-like ions with Z = 6-36 and n = 2 , 3 2017, ADNDT, 113, 117-257 adsRef: http://adsabs.harvard.edu/abs/2017ADNDT.113..117G DOI: 10.1016/j.adt.2016.04.002 Theoretical energy levels (n=4,5 above IP): calculations of U. Safronova reported in Kato et al., 1997, ADNDT, 67, 225. ADS http://adsabs.harvard.edu/abs/1997ADNDT..67..225K updated by U. Safronova, 2001, private communication theoretical energy levels adjusted by SHFTIC file derived from Rudolph, NIST, Artemyev, Goryaev (n=2, 3 above IP) and Safronova (n= 4,5,6 above IP energies wavelengths determined from energy levels minimum branching ratio = 1.00e-04 sorted by lvl12 elvlcName = fe_25.elvlc wgfaName = fe_25.wgfa-srt allWvl = 1 minDiff = 0.00010 outfile = fe_25.wgfa.olg.imp produced as a part of the 'CHIANTI' atomic database for astrophysical spectroscopy K. Dere (GMU) - 2020 October 11 %File processed with wgfa_tidy by pryoung on 31-May-2023
contains the effective electron collision strengths scaled according to the rules formulated by Burgess and Tully (1992).
K. Dere (GMU) - 2020 July 06 produced as a part of the 'CHIANTI' atomic database for astrophysical spectroscopy collision strengths provided in the range 1.25e+05 to 1.25e+09 K DOI: http://dx.doi.org/10.1088/0953-4075/34/15/320 adsRef: http://adsabs.harvard.edu/abs/2001JPhB...34.3179W A radiation-damped R-matrix approach to the electron-impact excitation of helium-like ions for diagnostic application to fusion and astrophysical plasmas Whiteford, A. D.; Badnell, N. R.; Ballance, C. P.; O'Mullane, M. G.; Summers, H. P.; Thomas, A. L. Theoretical collision strengths: filename: fe_25.scups
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