arc.alkali_atom_functions.AlkaliAtom.getQuantumDefect#

AlkaliAtom.getQuantumDefect(n, l, j, s=0.5)[source]#

Quantum defect of the level.

For an example, see Rydberg energy levels example snippet.

Parameters:
  • n (int) – principal quantum number

  • l (int) – orbital angular momentum

  • j (float) – total angular momentum

  • s (float) – (optional). Total spin angular momentum. Default value of 0.5 correct for Alkali atoms. For divalent atoms it has to be explicitly defined.

Returns:

quantum defect

Return type:

float