NIST Physical Measurement Laboratory Handbook of Basic Atomic Spectroscopic Data

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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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Persistent Lines of Neutral Helium ( He I )

  Intensity   Wavelength (Å)   Aki
(108s-1)		   Energy
Levels (cm -1 )		   Configurations   Terms   J   Line
Ref.		   Aki
Ref.		 
                          
  100  522.21309 2.4356     0.0001s21S0M02D96
   191492.71201s4p1P°1  
         
  400  537.02992 5.6634     0.0001s21S0M02D96
   186209.36511s3p1P°1  
         
 1000  584.3343617.989     0.0001s21S0M02D96
   171134.89701s2p1P°1  
         
   60 3888.6046 0.0947159855.97451s2s3S1M02D96
   185564.85471s3p3P°0  
         
  200 3888.6456 0.0947159855.97451s2s3S1M02D96
   185564.58401s3p3P°1  
         
  300 3888.6489 0.0947159855.97451s2s3S1M02D96
   185564.56201s3p3P°2  
         
  500 5875.6148 0.7070169086.76661s2p3P°2M02D96
   186101.54631s3d3D3  
         
  250 5875.6404 0.5303169086.84301s2p3P°1M02D96
   186101.54881s3d3D2  
         
  120 5875.9663 0.3927169087.83091s2p3P°0M02D96
   186101.59301s3d3D1  
         
  200 6678.1517 0.6369171134.89701s2p1P°1M02D96
   186104.96681s3d1D2  
         
  100 7065.1771 0.1547169086.76661s2p3P°2M02D96
   183236.79181s3s3S1  
         
   60 7065.2153 0.0928169086.84301s2p3P°1M02D96
   183236.79181s3s3S1  
         
   20 7065.7086 0.0309169087.83091s2p3P°0M02D96
   183236.79181s3s3S1  
         
   50 7281.3507 0.1830171134.89701s2p1P°1M02D96
   184864.82941s3s1S0  
         
  15010829.0911 0.1022159855.97451s2s3S1M02D96
   169087.83091s2p3P°0  
         
  50010830.2501 0.1021159855.97451s2s3S1M02D96
   169086.84301s2p3P°1  
         
 100010830.3398 0.1021159855.97451s2s3S1M02D96
   169086.76661s2p3P°2  
         
  50020581.287 0.0197166277.44031s2s1S0M02D96
   171134.89701s2p1P°1  
         


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