Neutral AtomSingly Ionized Atom
Finding listPeriodic TableAtomic DataStrong LinesNeutral Atom Persistent Lines Neutral Atom Energy LevelsSingly Ionized Persistent LinesSingly Ionized Energy LevelsReferences 

Energy Levels of Singly Ionized Helium ( He II )


Configuration Term   J     Level(cm-1)  Ref.

1s 2S 1/2 0.0000 MK00b 2p 21/2 329179.2940 MK00b 2p 23/2 329185.1511 MK00b 2s 2S 1/2 329179.7623 MK00b 3p 21/2 390140.8250 MK00b 3p 23/2 390142.5605 MK00b 3s 2S 1/2 390140.9646 MK00b 3d 2D 3/2 390142.5576 MK00b 3d 2D 5/2 390143.1361 MK00b 4p 21/2 411477.1228 MK00b 4p 23/2 411477.8550 MK00b 4s 2S 1/2 411477.1818 MK00b 4d 2D 3/2 411477.8537 MK00b 4d 2D 5/2 411478.0978 MK00b 4f 25/2 411478.0973 MK00b 4f 27/2 411478.2193 MK00b He Limit 438908.8789 MK00b