Persistent Lines of Singly Ionized Lanthanum ( La II )

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

 3759.08      1970.70      5d2            a 3F   4
             28565.40      5d6p           x 3F°  4
  return
 
 3790.83      1016.10      5d2            a 3F   3
             27388.11      5d6p           y 3D°  2
  return
 
 3794.78      1970.70      5d2            a 3F   4
             28315.25      5d6p           y 3D°  3
  return
 
 3871.64      1016.10      5d2            a 3F   3
             26837.66      5d6p           x 3F°  3
  return
 
 3949.10      3250.35      5d6s           a 3D   3
             28565.40      5d6p           x 3F°  4
  return
 
 3988.52      3250.35      5d6s           a 3D   3
             28315.25      5d6p           y 3D°  3
  return
 
 3995.75      1394.46      5d2                   2
             26414.01      5d6p           x 3F°  2
  return
 
 4031.69      2591.60      5d6s           a 3D   2
             27388.11      5d6p           y 3D°  2
  return
 
 4042.91      7473.32      5d2            a 1G   4
             32201.05      5d6p           x 1F°  3
  return
 
 4077.35      1895.15      5d6s           a 3D   1
             26414.01      5d6p           x 3F°  2
  return
 
 4086.72         0.00      5d2            a 3F   2
             24462.66      5d6p           y 1D°  2
  return
 
 4123.23      2591.60      5d6s           a 3D   2
             26837.66      5d6p           x 3F°  3
  return
 
 4333.74      1394.46      5d2                   2
             24462.66      5d6p           y 1D°  2
  return