Persistent Lines of Neutral Helium ( He I )
Wavelength Energy Configuration Term J
(Å) Levels (cm-1)
522.21309 0.000 1s2 1S 0
191492.7120 1s4p 1P° 1
return
537.02992 0.000 1s2 1S 0
186209.3651 1s3p 1P° 1
return
584.33436 0.000 1s2 1S 0
171134.8970 1s2p 1P° 1
return
3888.6046 159855.9745 1s2s 3S 1
185564.8547 1s3p 3P° 0
return
3888.6456 159855.9745 1s2s 3S 1
185564.5840 1s3p 3P° 1
return
3888.6489 159855.9745 1s2s 3S 1
185564.5620 1s3p 3P° 2
return
5875.6148 169086.7666 1s2p 3P° 2
186101.5463 1s3d 3D 3
return
5875.6404 169086.8430 1s2p 3P° 1
186101.5488 1s3d 3D 2
return
5875.9663 169087.8309 1s2p 3P° 0
186101.5930 1s3d 3D 1
return
6678.1517 171134.8970 1s2p 1P° 1
186104.9668 1s3d 1D 2
return
7065.1771 169086.7666 1s2p 3P° 2
183236.7918 1s3s 3S 1
return
7065.2153 169086.8430 1s2p 3P° 1
183236.7918 1s3s 3S 1
return
7065.7086 169087.8309 1s2p 3P° 0
183236.7918 1s3s 3S 1
return
7281.3507 171134.8970 1s2p 1P° 1
184864.8294 1s3s 1S 0
return
10829.0911 159855.9745 1s2s 3S 1
169087.8309 1s2p 3P° 0
return
10830.2501 159855.9745 1s2s 3S 1
169086.8430 1s2p 3P° 1
return
10830.3398 159855.9745 1s2s 3S 1
169086.7666 1s2p 3P° 2
return
20581.287 166277.4403 1s2s 1S 0
171134.8970 1s2p 1P° 1
return