Atomic and Ionic Fine-Structure Lines in the ISO Range

This list collects potentially bright fine-structure lines in the 2-205 micron range.

lambda: is the vacuum wavelength in micron.
elambda: is the best information on the uncertainty of this wavelength.
ep: is the excitation potential in eV to create the relevant species.
ip: is the ionization potential in eV to get to the next ionization stage.


-------- ------------- ---------- -------- ------ ------
species  transition    lambda     elambda  ep     ip
-------- ------------- ---------- -------- ------ ------
[SiVI]   2P1/2-2P3/2    +1.963410 +.000100 166.77 205.05
[SiVII]  3P1-3P2        +2.483340 +.000100 205.05 246.52
[SiIX]   3P2-3P1        +2.584230 +.000230 303.17 351.10
[AlV]    2P1/2-2P3/2    +2.905190 +.000370 120.00 153.83
[CoII]   a5F5-a3F4      +2.984600 +.000100  +7.86 +17.08
[MgVIII] 2P3/2-2P1/2    +3.027950 +.000250 224.95 265.96
[NiI]    a1D2-a3D3      +3.120000 +.000100  +0.00  +7.64
[KVII]   2P3/2-2P1/2    +3.190530 +.000150 +99.40 117.56
[CaIV]   2P1/2-2P3/2    +3.206710 +.000150 +50.91 +67.27
[AlVI]   3P1-3P2        +3.659710 +.000620 153.83 190.48
[AlVIII] 3P2-3P1        +3.690000 +.014000 241.44 284.60
[SiIX]   3P1-3P0        +3.935700 +.000400 303.17 351.10
[NiI]    a1D2-a3D2      +3.952400 +.000100  +0.00  +7.64
[FeII]   a4F5/2-a6D7/2  +4.076319 +.000004  +7.90 +16.19
[FeII]   a4F3/2-a6D5/2  +4.081906 +.000004  +7.90 +16.19
[CaVII]  3P2-3P1        +4.085800 +.001200 108.78 127.20
[FeII]   a4F7/2-a6D9/2  +4.114990 +.000005  +7.90 +16.19
[CaV]    3P1-3P2        +4.159370 +.000620 +67.27 +84.50
[FeII]   a4F3/2-a6D3/2  +4.434839 +.000007  +7.90 +16.19
[MgIV]   2P1/2-2P3/2    +4.486680 +.000300 +80.14 109.24
[ArVI]   2P3/2-2P1/2    +4.529520 +.000310 +75.02 +91.01
[FeII]   a4F5/2-a6D5/2  +4.607664 +.000005  +7.90 +16.19
[KIII]   2P1/2-2P3/2    +4.618020 +.000470 +31.63 +45.80
[FeII]   a4F3/2-a6D1/2  +4.671945 +.000005  +7.90 +16.19
[NaVII]  2P3/2-2P1/2    +4.684720 +.000330 172.15 208.44
[FeII]   a4F7/2-a6D7/2  +4.889137 +.000005  +7.90 +16.19
[FeII]   a4F5/2-a6D3/2  +5.062350 +.000010  +7.90 +16.19
[FeII]   a4F9/2-a6D9/2  +5.340169 +.000009  +7.90 +16.19
[MgVII]  3P2-3P1        +5.503200 +.001200 186.51 224.95
[KVI]    3P2-3P1        +5.575000 +.004000 +82.66 +99.40
[MgV]    3P1-3P2        +5.609850 +.000630 109.24 141.27
[FeII]   a4F7/2-a6D5/2  +5.673905 +.000008  +7.90 +16.19
[AlVIII] 3P1-3P0        +5.850000 +.040000 241.44 284.60
[NiI]    a1D2-a3D1      +5.893300 +.000100  +0.00  +7.64
[KIV]    3P1-3P2        +5.982000 +.001200 +45.80 +60.91
[CaVII]  3P1-3P0        +6.154000 +.008000 108.78 127.20
[SiVII]  3P0-3P1        +6.492200 +.001100 205.05 246.52
[NiII]   2D3/2-2D5/2    +6.636000 +.000300  +7.64 +18.17
[ClV]    2P3/2-2P1/2    +6.706670 +.000620 +53.46 +67.82
[FeII]   a4F9/2-a6D7/2  +6.721283 +.000011  +7.90 +16.19
[ArII]   2P1/2-2P3/2    +6.985274 +.000003 +15.76 +27.63
[NaIII]  2P1/2-2P3/2    +7.317700 +.001200 +47.29 +71.62
[NiI]    a3F3-a3F4      +7.506700 +.000200  +0.00  +7.64
[NeVI]   2P3/2-2P1/2    +7.652400 +.001200 126.21 157.93
[FeVII]  3F4-3F3        +7.814500 +.001200 +99.10 124.98
[ArV]    3P2-3P1        +7.901600 +.000200 +59.81 +75.02
[NaVI]   3P2-3P1        +8.610590 +.000880 138.39 172.15
[KVI]    3P1-3P0        +8.829900 +.000200 +82.66 +99.40
[ArIII]  3P1-3P2        +8.991380 +.000120 +27.63 +40.74
[MgVII]  3P1-3P0        +9.009000 +.000400 186.51 224.95
[NaIV]   3P1-3P2        +9.041000 +.001000 +71.62 +98.91
[AlVI]   3P0-3P1        +9.116000 +.008000 153.83 190.48
[FeVII]  3F3-3F2        +9.526700 +.001100 +99.10 124.98
[SIV]    2P3/2-2P1/2   +10.510500 +.000100 +34.79 +47.22
[CoII]   a3F3-a3F4     +10.521000 +.001000  +7.86 +17.08
[NiII]   4F7/2-4F9/2   +10.682200 +.000800  +7.64 +18.17
[NiI]    a3F2-a3F3     +11.307500 +.000200  +0.00  +7.64
[ClI]    2P1/2-2P3/2   +11.333347 +.000015  +0.00 +12.97
[CaV]    3P0-3P1       +11.482000 +.019000 +67.27 +84.50
[ClIV]   3P2-3P1       +11.761900 +.001100 +39.61 +53.46
[CoIII]  a4F7/2-a4F9/2 +11.890000 +.010000 +17.08 +33.50
[NiI]    a3D1-a3D2     +12.001000 +.000300  +0.00  +7.64
[CoI]    a4F7/2-a4F9/2 +12.255000 +.002000  +0.00  +7.86
[NiII]   4F5/2-4F7/2   +12.728800 +.001200  +7.64 +18.17
[NeII]   2P1/2-2P3/2   +12.813550 +.000020 +21.56 +40.96
[ArV]    3P1-3P0       +13.102200 +.000200 +59.81 +75.02
[FV]     2P3/2-2P1/2   +13.432000 +.009000 +87.14 114.24
[MgV]    3P0-3P1       +13.521300 +.000200 109.24 141.27
[NeV]    3P2-3P1       +14.321700 +.000200 +97.12 126.21
[ClII]   3P1-3P2       +14.367800 +.000800 +12.97 +23.81
[NaVI]   3P1-3P0       +14.396400 +.002100 138.39 172.15
[CoII]   a5F4-a5F5     +14.740000 +.002000  +7.86 +17.08
[NiI]    a3D2-a3D3     +14.814200 +.000300  +0.00  +7.64
[CoI]    b4F7/2-b4F9/2 +15.155000 +.002000  +0.00  +7.86
[KIV]    3P0-3P1       +15.390000 +.030000 +45.80 +60.91
[CoII]   a3F2-a3F3     +15.460000 +.002000  +7.86 +17.08
[NeIII]  3P1-3P2       +15.555100 +.000300 +40.96 +63.45
[CoIII]  a4F5/2-a4F7/2 +16.390000 +.030000 +17.08 +33.50
[CoI]    a4F5/2-a4F7/2 +16.925000 +.003000  +0.00  +7.86
[PIII]   2P3/2-2P1/2   +17.885000 +.005000 +19.77 +30.20
[FeII]   a4F7/2-a4F9/2 +17.935950 +.000090  +7.90 +16.19
[NiII]   4F3/2-4F5/2   +18.240500 +.002000  +7.64 +18.17
[CoI]    b4F5/2-b4F7/2 +18.264000 +.003000  +0.00  +7.86
[SIII]   3P2-3P1       +18.713000 +.000200 +23.34 +34.79
[CoII]   a5F3-a5F4     +18.804000 +.004000  +7.86 +17.08
[ClIV]   3P1-3P0       +20.310700 +.002100 +39.61 +53.46
[NaIV]   3P0-3P1       +21.290000 +.060000 +71.62 +98.91
[ArIII]  3P0-3P1       +21.830200 +.000300 +27.63 +40.74
[FeIII]  5D3-5D4       +22.925000 +.002000 +16.19 +30.65
[FeI]    a5D3-a5D4     +24.042330 +.000060  +0.00  +7.90
[CoIII]  a4F3/2-a4F5/2 +24.070000 +.060000 +17.08 +33.50
[NeV]    3P1-3P0       +24.317500 +.000300 +97.12 126.21
[FeII]   a4F5/2-a4F7/2 +24.519250 +.000160  +7.90 +16.19
[FI]     2P1/2-2P3/2   +24.747500 +.001500  +0.00 +17.42
[CoI]    a4F3/2-a4F5/2 +24.845000 +.006000  +0.00  +7.86
[SI]     3P1-3P2       +25.249000 +.000300  +0.00 +10.36
[CoII]   a5F2-a5F3     +25.681000 +.007000  +7.86 +17.08
[FIV]    3P2-3P1       +25.830000 +.040000 +62.71 +87.14
[OIV]    2P3/2-2P1/2   +25.890300 +.000300 +54.93 +77.41
[CoI]    b4F3/2-b4F5/2 +25.930000 +.007000  +0.00  +7.86
[FeII]   a6D7/2-a6D9/2 +25.988290 +.000180  +7.90 +16.19
[FII]    3P1-3P2       +29.330000 +.040000 +17.42 +34.97
[PII]    3P2-3P1       +32.870000 +.030000 +10.48 +19.77
[FeIII]  5D2-5D3       +33.038400 +.006600 +16.19 +30.65
[ClII]   3P0-3P1       +33.281000 +.008000 +12.97 +23.81
[SIII]   3P1-3P0       +33.481000 +.000300 +23.34 +34.79
[FeI]    a5D2-a5D3     +34.713300 +.000120  +0.00  +7.90
[SiII]   2P3/2-2P1/2   +34.815200 +.000500  +8.15 +16.35
[FeII]   a6D5/2-a6D7/2 +35.348650 +.000260  +7.90 +16.19
[FeII]   a4F3/2-a4F5/2 +35.777400 +.000370  +7.90 +16.19
[NeIII]  3P0-3P1       +36.013500 +.000300 +40.96 +63.45
[CoII]   a5F1-a5F2     +39.274000 +.015000  +7.86 +17.08
[FIV]    3P1-3P0       +44.070000 +.210000 +62.71 +87.14
[FeII]   a6D3/2-a6D5/2 +51.300440 +.000910  +7.90 +16.19
[FeIII]  5D1-5D2       +51.680000 +.200000 +16.19 +30.65
[OIII]   3P2-3P1       +51.814500 +.000500 +35.12 +54.93
[FeI]    a5D1-a5D2     +54.310930 +.000420  +0.00  +7.90
[SI]     3P0-3P1       +56.311000 +.010000  +0.00 +10.36
[NIII]   2P3/2-2P1/2   +57.317000 +.002000 +29.60 +47.45
[PII]    3P1-3P0       +60.640000 +.070000 +10.48 +19.77
[OI]     3P1-3P2       +63.183705 +.000002  +0.00 +13.62
[FII]    3P0-3P1       +67.200000 +.300000 +17.42 +34.97
[SiI]    3P2-3P1       +68.473000 +.004000  +0.00  +8.15
[FeII]   a6D1/2-a6D3/2 +87.384400 +.002700  +7.90 +16.19
[OIII]   3P1-3P0       +88.356000 +.002300 +35.12 +54.93
[AlI]    2P3/2-2P1/2   +89.237000 +.008000  +0.00  +5.99
[FeIII]  5D0-5D1       105.370000 +.600000 +16.19 +30.65
[FeI]    a5D0-a5D1     111.182800 +.001800  +0.00  +7.90
[NII]    3P2-3P1       121.897570 +.000020 +14.53 +29.60
[SiI]    3P1-3P0       129.681730 +.000030  +0.00  +8.15
[OI]     3P0-3P1       145.525439 +.000007  +0.00 +13.62
[CII]    2P3/2-2P1/2   157.740900 +.000100 +11.26 +24.38
[NII]    3P1-3P0       205.178230 +.000020 +14.53 +29.60
-------- ------------- ---------- -------- ------ ------

Special thanks to S.Colgan, M.Haas, S.Lord, G.Nave, and
E.Serabyn for providing unpublished data.

25-Jul-1997: include new SWS wavelength determinations
 from Feuchtgruber et al., ApJ, 487, 962 (1997)
08-Feb-2002: 7 more lines from Feuchtgruber et al. ApJS 136,221 (2001)
Last update: 08-Feb-2002
Comments on this list to D.Lutz (lutz @ mpe.mpg.de)


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