Helium (He)
Persistent Lines of Neutral Helium ( He I )
Int. Wavelength Aki Energy Configuration Term J Line Aki
(Å) (108s-1) Levels (cm-1) Ref. Ref.
100 522.21309 2.4356 0.000 1s2 1S 0 M02 D96
191492.7120 1s4p 1P° 1
400 537.02992 5.6634 0.000 1s2 1S 0 M02 D96
186209.3651 1s3p 1P° 1
1000 584.33436 17.989 0.000 1s2 1S 0 M02 D96
171134.8970 1s2p 1P° 1
60 3888.6046 0.0947 159855.9745 1s2s 3S 1 M02 D96
185564.8547 1s3p 3P° 0
200 3888.6456 0.0947 159855.9745 1s2s 3S 1 M02 D96
185564.5840 1s3p 3P° 1
300 3888.6489 0.0947 159855.9745 1s2s 3S 1 M02 D96
185564.5620 1s3p 3P° 2
500 5875.6148 0.7070 169086.7666 1s2p 3P° 2 M02 D96
186101.5463 1s3d 3D 3
250 5875.6404 0.5303 169086.8430 1s2p 3P° 1 M02 D96
186101.5488 1s3d 3D 2
120 5875.9663 0.3927 169087.8309 1s2p 3P° 0 M02 D96
186101.5930 1s3d 3D 1
200 6678.1517 0.6369 171134.8970 1s2p 1P° 1 M02 D96
186104.9668 1s3d 1D 2
100 7065.1771 0.1547 169086.7666 1s2p 3P° 2 M02 D96
183236.7918 1s3s 3S 1
60 7065.2153 0.0928 169086.8430 1s2p 3P° 1 M02 D96
183236.7918 1s3s 3S 1
20 7065.7086 0.0309 169087.8309 1s2p 3P° 0 M02 D96
183236.7918 1s3s 3S 1
50 7281.3507 0.1830 171134.8970 1s2p 1P° 1 M02 D96
184864.8294 1s3s 1S 0
150 10829.0911 0.1022 159855.9745 1s2s 3S 1 M02 D96
169087.8309 1s2p 3P° 0
500 10830.2501 0.1021 159855.9745 1s2s 3S 1 M02 D96
169086.8430 1s2p 3P° 1
1000 10830.3398 0.1021 159855.9745 1s2s 3S 1 M02 D96
169086.7666 1s2p 3P° 2
500 20581.287 0.0197 166277.4403 1s2s 1S 0 M02 D96
171134.8970 1s2p 1P° 1