New calculations for Fe I. 22 Oct 2014 NIST adopted newer wavelength standards that revise the wavelengths and energy levels for Fe I. See the atomic energy levels for Fe I on the NIST website. All the energies have been updated. The least squares fits have been revised many times, especially when the line list predicted multiplets with lines with jumbled strengths or lines in the wrong location compared to observed spectra. These usually were because of interchanged levels. Fiorella Castelli found several of these errors. Ruth Peterson has identified 66 new levels: 23 EVEN LEVELS J E(CM-1) EXPANDED LABEL LABEL 0.0 51143.92 3d6 4s(6D)4d e7F 4s6D4d e7F 0.0 54304.21 3d7(4F)4d 5D (4F)4d 5D 0.0 58428.17 3d6 4s(6D)4d 5D 4s6D4d 5D 1.0 58628.41 3d6 4s(4D)4d 5P 4s4D4d 5P 1.0 59300.54 3d7(4P)5s 3P (4P)5s 3P 2.0 58779.59 3d6 4s(4D)4d 3D 4s4D4d 3D 2.0 59366.79 3d7(4F)5d 5F (4F)5d 5F 2.0 60087.26 3d6 4s(4D)4d 3P 4s4D4d 3P 3.0 38602.26 3d7(2F)4s 1F (2F)4s 1F 3.0 58616.11 3d7(4F)5d 5P (4F)5d 5P 3.0 59196.87 3d7(4F)5d 5F (4F)5d 5F 3.0 59294.38 3d6 4s(4D)4d 3G 4s4D4d 3G 3.0 59636.36 3d7(4F)5d 5F5D3G 5d 5F5D3G 3.0 61724.84 3d7(2G)5s 3G (2G)5s 3G 4.0 59532.97 3d6 4s(6D)6d 3+[4+] s6d 3+[4+] 4.0 61340.46 d7(2G)5s 3G (2G)5s 3G 4.0 61935.47 3d7(2G)5s 1G (2G)5s 1G 4.0 64531.78 3d6 4s(3H)5s 5H 4s3H5s 5H 5.0 61198.48 3d7(2G)5s 3G (2G)5s 3G 5.0 66293.98 3d7(2H)5s 1H (2H)5s 1H 5.0 67687.99 3d7(2G)4d 3I (2G)4d 3I 6.0 64300.51 3d6 4s(3H)5s 5H 4s3H5s 5H 6.0 67716.75 3d7(2G)4d 1I (2G)4d 1I 33 ODD LEVELS J E(CM-1) EXPANDED LABEL LABEL 0.0 54720.67 d7(4F)5p 5D (4F)5p 5D 0.0 55179.91 d7(2P)4p 1S (2P)4p 1S 1.0 50675.08 d6(3P)4s4p(3P) 1P 3Psp3P 1P 1.0 59703.05 d7(4F)6p 5D (4F)6p 5D 1.0 60169.33 d6(5D)4s(4F)7p 5D 4s4F7p 5D 1.0 60336.16 d6(5D)4s(6D)7p 5F 4s6D7p 5F 1.0 60375.65 d7(2F)4p 3D (2F)4p 3D 1.0 61075.16 d6(3F)4s4p(1P) 3D 3Fsp1P 3D 1.0 61155.62 d6(3P)4s4p(1P) 3P 3Psp1P 3P 2.0 60237.81 d6(5D)4s(6D)7p 5D 4s6D7p 5D 2.0 60585.09 d6(3P)4s4p(1P) 3P 3Psp1P 3P 2.0 61866.45 d7(4F)7p 3D (4F)7p 3D 3.0 59418.83 d7(4F)6p 5F (4F)6p 5F [ 3.0 59503.40 d7(4F)6p 5G5D3D 6p 5G5D3D replaced 03jun16] 3.0 59503.38 d6(5D)4s(6D)7p 7F 4s6D7p 7F [03jun16] 3.0 59794.85 d6(3D)4s4p(3P) 1F 3Dsp3P 1F 3.0 59875.89 d6(5D)4s(6D)7p 5D 4s6D7p 5D 3.0 60013.27 d7(4F)6p 3G (4F)6p 3G 3.0 60055.93 d6(5D)4s(6D)7p 5F 4s6D7p 5F 3.0 61351.66 d7(4F)7p 3D (4F)7p 3D 3.0 61770.94 d7(4F)7p 5D (4F)7p 5D 3.0 62016.99 d7(4F)7p 3G (4F)7p 3G 3.0 62287.54 d7(4F)7p 5G (4F)7p 5G 3.0 62509.75 d7(4F)8p 3D3G3F 8p 3D3G3F 4.0 58729.80 d7(4F)6p 5D (4F)6p 5D 4.0 59317.86 d6(5D)4s(6D)7p 7D 4s6D7p 7D 4.0 59377.30 d7(4F)6p 5G (4F)6p 5G 4.0 59496.62 d6(5D)4s(6D)7p 5D 4s6D7p 5D 4.0 59595.12 d6(5D)4s(6D)7p 7F 4s6D7p 7F 4.0 59731.29 d7(4F)6p 3G (4F)6p 3G 4.0 59804.54 d6(5D)4s(6D)7p 5F 4s6D7p 5F 4.0 61113.38 d7(4F)7p 3F (4F)7p 3F 4.0 61173.80 d7(4F)7p 5D (4F)7p 5D 4.0 61648.30 d7(4F)7p 3G (4F)7p 3G 4.0 61678.26 d7(4F)7p 5F (4F)7p 5F 4.0 62683.77 d7(4F)8p 3G5G5F 8p 3G5G5F 5.0 58609.56 d7(4F)6p 5F (4F)6p 5F 5.0 59021.31 d7(4F)6p 5G (4F)6p 5G 5.0 59357.03 d7(4F)6p 3G (4F)6p 3G 5.0 61140.62 d7(4F)7p 3G (4F)7p 3G 5.0 61155.95 d7(4F)7p 5F (4F)7p 5F 5.0 61693.44 d7(4F)7p 5G (4F)7p 5G 5.0 62107.29 d6(3G)4s4p(1P) 3G 3Gsp1P 3G Peterson, R.C. and Kurucz, R.L. 2015. Astrophys.J.Supp. 216:1, 10pp. and she has determined gf values from spectra for a number of previously unidentified lines which are given in gf2600pk.lab . 12 Dec 2014 A few labels changed. No energies, wavelengths, or gfs changed. 03 Jun 2016 Ruth Peterson has identified 31 new levels: 3 EVEN LEVELS J E(CM-1) EXPANDED LABEL LABEL 6.0 58657.76 3d7(4F)5d 5G (4F)5d 5G 6.0 59273.11 3d7(4F)5d 5H (4F)5d 5H 6.0 67231.63 3d7(2G)4d 3H (2G)4d 3H 28 ODD LEVELS J E(CM-1) EXPANDED LABEL LABEL 0.0 53591.50 d7(2D)4p 3P (2D)4p 3P 0.0 58848.58 d6(5D)4s(6D)5p 5D 4s6D5p 5D 1.0 62198.79 d6(1D)4s4p(3P) 3D 1Dsp3P 3D 2.0 56653.75 d6(3D)4s4p(3P) 3P 3Dsp3P 3P 2.0 59438.68 d7(4F)6p 5F (4F)6p 5F 2.0 59697.70 d7(4F)6p 3F (4F)6p 3F 2.0 59907.06 d6(5D)4s(6D)7p 5D 4s6D7p 5D 2.0 59971.16 d7(4F)6p 3D (4F)6p 3D 2.0 62046.52 d7(4F)7p 3F (4F)7p 3F 2.0 62074.37 d6(5D)4s(6D)9p 7D 4s5D9p 7D 2.0 62841.52 d7(4F)8p 3F (4F)8p 3F 3.0 58432.40 d6(5D)4s(6D)5p 3F 4s6D5p 3F 3.0 59580.38 d6(5D)4s(6D)7p 7P 4s6D7p 7P 3.0 59692.97 d7(5D)4s(6D)7p 5P 4s6D7p 5P 3.0 60806.67 d6(a3F)4s4p(1P) 3D 3Fsp1P 3D 3.0 61665.22 d7(4F)7p 3F (4F)7p 3F 3.0 61846.98 d6(5D)4s(6D)9p 5D 4s6D9p 5D 3.0 62054.01 d7(4F)7p 5F (4F)7p 5F 3.0 62087.91 d6(5D)4s(6D)10p 5P 4s6D10p 5P 3.0 62884.77 d64s(5D)8f 5H 4s5D8f 5H 4.0 58744.86 d7(4F)6p 3F (4F)6p 3F 4.0 61467.67 d6(5D)4s(6D)9p 5D 4s6D9p 5D 4.0 61998.52 d6(5D)4s(6D)10p 5D 4s6D10p 5D 4.0 62047.71 d7(4F)7p 5G (4F)7p 5G 4.0 62092.55 d7(4F)8p 3F (4F)8p 3F 4.0 63182.86 d7(4F)8p 3G (4F)8p 3G 5.0 59473.40 d6(5D)4s(4D)7p 5F 4s4D7p 5F 5.0 60616.19 d6(5D)4s(4D)8p 5F 4s4D8p 5F Most of the files have been updated. A paper is in preparation. Peterson expects to find many more levels.