is a parameter for AtomicState that specifies the total electronic angularmomentum (orbital plus spin) quantum number for the state.


returns the value specified for J in AtomicState state, or zero if it is not specified.

Details and Options

  • The value specified for J should be integer or half-integer.
  • J is automatically threaded over a list of AtomicState objects appearing as its argument.
  • An atomic state with J but not NuclearSpin specified is considered to be part of an atomic system of type "Zeeman", and Sublevels will expand it to its list of Zeeman sublevels.


Basic Examples  (1)

Find the Zeeman sublevels of a state with J specified:

Get the J values from the sublevels:

This is a Zeeman system: