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4.5 -1.000 11157079.651 348 2s2.2p2(1D).5d 2 D 2.5 -1.000 11159890.552 349 2s2.2p2(1D).5d 2 D 1.5 -1.000 11160391.690 350 2s2.2p2(1D).5d 2 G 3.5 -1.000 11160768.774 351 2s2.2p2(1D).5d 2 P 0.5 -1.000 11161219.699 352 2s2.2p2(1D).5d 2 F 2.5 -1.000 11168276.980 353 2s2.2p2(1D).5d 2 S 0.5 -1.000 11168644.218 354 2s2.2p2(1D).5d 2 P 1.5 -1.000 11170071.821 355 2s2.2p2(1S).5s 2 S 0.5 -1.000 11226781.124 356 2s2.2p2(1S).5p 2 P 0.5 -1.000 11272299.007 357 2s2.2p2(1S).5p 2 P 1.5 -1.000 11276339.615 358 2s2.2p2(1S).5d 2 D 2.5 -1.000 11321691.108 359 2s2.2p2(1S).5d 2 D 1.5 -1.000 11322392.110 360 1s.2s2.2p4 17 4 P 2.5 52402384.000 52641850.000 361 1s.2s2.2p4 17 4 P 1.5 52474700.000 52709833.000 362 1s.2s2.2p4 17 4 P 0.5 52491000.000 52728286.000 363 1s.2s2.2p4 17 2 D 1.5 52563000.000 52837712.000 364 1s.2s2.2p4 17 2 D 2.5 52601000.000 52883759.000 365 1s.2s2.2p4 17 2 P 0.5 -1.000 52917518.000 366 1s.2s2.2p4 17 2 P 1.5 52667000.000 52930013.000 367 1s.2s2.2p4 17 2 S 0.5 52814000.000 53057148.000 368 1s.2s(3S).2p5 18 4 P 2.5 -1.000 53399350.000 369 1s.2s(3S).2p5 18 4 P 1.5 -1.000 53454511.000 370 1s.2s(3S).2p5 18 4 P 0.5 -1.000 53499159.000 371 1s.2s(1S).2p5 18 2 P 1.5 -1.000 53682631.000 372 1s.2s(3S).2p5 18 2 P 0.5 -1.000 53719798.000 373 1s.2s(3S).2p5 18 2 P 1.5 -1.000 53847765.000 374 1s.2s(1S).2p5 18 2 P 0.5 -1.000 53884713.000 375 1s.2p6 19 2 S 0.5 -1.000 54590401.000 -1 %filename: fe_20.elvlc %Observed energy levels (2-5): Kucera et al., 2000, ApJ, 538, 424 %Observed energy levels (6-15): Edlen, B., 1984,P ysicaS cripta, 30, 135 %Observed energy levels (n=3): identifications from the X-ray line list by Landi &P hillips 2005, ApJS, 160, 286 %Observed energy levels (n=4,5):Shirai,T., Sugar,J., Musgrove,A., Wiese,W.L., 2000, J.Phys.Chem.Ref.Data, Monograph 8 %Theoretical energy levels (levels up to n=4): Witthoeft, M.C.,D el Zanna,G ., & Badnell, N.R. 2007, A&A, 466, 763 %Theoretical energy levels (n=5 levels): Landi &Gu, 2006, ApJ, 640, 1171 % produced as part of the Arcetri/Cambridge/NRL 'CHIANTI' atomic data base collaboration % % Giulio Del Zanna and Enrico Landi - Oct 2008 % revised January 2018 Theoretical energy levels above IP: 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 Autostructure calculation optimized with 'SHFTIC' file using energy corrections from the following sources: observed energy level 360 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 Lopez-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 other observed eneryg levels above IP Observed energy levels: Kramida, A., Ralchenko, Yu., Reader, J., and NIST ASD Team (2012). NIST Atomic Spectra Database (ver. 5.0), [Online]. Available: http://physics.nist.gov/asd [2012, September 14]. National Institute of Standards and Technology, Gaithersburg, MD. produced as a part of the 'CHIANTI' atomic database for astrophysical spectroscopy K. Dere (GMU) - 2018 January 31 %comment: Fixed text problems in comments. No change to data. Peter Young, 25-Jul-2019