Persistent Lines of Neutral Beryllium ( Be I )

Wavelength  Energy         Configuration  Term   J    
   (Å)      Levels (cm-1)

 1661.478        0.000     2s2            1S     0    
             60187.34      2s3p           1P°    1    
  return
 
 2348.610        0.000     2s2            1S     0    
             42565.35      2s2p           1P°    1    
  return
 
 2494.728    21981.27      2s2p           3P°    2    
             62053.72      2s3d           3D     1,2,3
  return
 
 2650.454    21978.925     2s2p           3P°    1    
             59697.08      2p2            3P     2    
  return
 
 2650.550    21978.28      2s2p           3P°    0    
             59695.07      2p2            3P     1    
  return
 
 2650.613    21978.925     2s2p           3P°    1    
             59695.07      2p2            3P     1    
  return
 
 2650.619    21981.27      2s2p           3P°    2    
             59697.08      2p2            3P     2    
  return
 
 2650.694    21978.925     2s2p           3P°    1    
             59693.65      2p2            3P     0    
  return
 
 2650.760    21981.27      2s2p           3P°    2    
             59695.07      2p2            3P     1    
  return
 
 3321.340    21981.27      2s2p           3P°    2    
             52080.94      2s3s           3S     1    
  return
 
 4572.664    42565.35      2s2p           1P°    1    
             64428.31      2s3d           1D     2    
  return
 
 8254.070    42565.35      2s2p           1P°    1    
             54677.26      2s3s           1S     0    
  return