qspec.simulate.Atom  (  states = None ,  decay_map = None ,  mass = 0 ,  instance = None  )[source]

Class representing an Atom and its inner structure.

Parameters:

statesIterable[qspec.simulate.State] | None

The states $|\mathrm{[label]}\pi JIFm\rangle$ of the atom.

decay_mapqspec.simulate.DecayMap | None

The DecayMap connecting the atomic states.

massscalar

The mass $m$ of the atom (u).

instanceqspec.simulate.Atom | C.AtomHandler.value | None

An existing Atom instance. If this is specified, the other parameters are omitted.