NIST Physical Measurement Laboratory Handbook of Basic Atomic Spectroscopic Data

[skip navigation] National Institute of Standards and Technology NIST Physical Measurement Laboratory Helium (He) 

Homepage - IntroductionFinding listSelect element by name.Select element by atomic number.Select element from periodic tableHelium Atomic DataHelium Strong LinesHelium Neutral Atom Persistent LinesHelium Neutral Atom Energy LevelsHelium Singly Ionized Persistent LinesHelium Singly Ionized Energy LevelsHelium References
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Energy Levels of Singly Ionized Helium ( He II )

  Configuration   Term   J   Level(cm-1)   Ref. 
              
1s2S1/2     0.0000MK00b
     
2p21/2329179.2940MK00b
  3/2329185.1511MK00b
     
2s2S1/2329179.7623MK00b
     
3p21/2390140.8250MK00b
  3/2390142.5605MK00b
     
3s2S1/2390140.9646MK00b
     
3d2D3/2390142.5576MK00b
  5/2390143.1361MK00b
     
4p21/2411477.1228MK00b
  3/2411477.8550MK00b
     
4s2S1/2411477.1818MK00b
     
4d2D3/2411477.8537MK00b
  5/2411478.0978MK00b
     
4f25/2411478.0973MK00b
  7/2411478.2193MK00b
     

HeLimit 438908.8789MK00b
     


Homepage - IntroductionFinding listSelect element by name.Select element by atomic number.Select element from periodic tableHelium Atomic DataHelium Strong LinesHelium Neutral Atom Persistent LinesHelium Neutral Atom Energy LevelsHelium Singly Ionized Persistent LinesHelium Singly Ionized Energy LevelsHelium References
Switch to ASCII Version