arc.alkali_atom_functions.AlkaliAtom.getRadialCoupling#

AlkaliAtom.getRadialCoupling(n, l, j, n1, l1, j1, s=0.5)[source]#

Returns radial part of the coupling between two states (dipole and quadrupole interactions only)

Parameters

  • n1 (int) – principal quantum number

  • l1 (int) – orbital angular momentum

  • j1 (float) – total angular momentum

  • n2 (int) – principal quantum number

  • l2 (int) – orbital angular momentum

  • j2 (float) – total angular momentum

  • s (float) – optional, total spin angular momentum of state. By default 0.5 for Alkali atoms.

Returns

radial coupling strength (in a.u.), or zero for forbidden transitions in dipole and quadrupole approximation.

Return type

float