Is it possible, in theory, that a radioisotope undergoing nuclear decay (eg. alpha particle emission) can be modeled so as to determine the origin and/or direction of the emitted particle? For instance, perhaps one could model nucleon interactions deterministically and observe that when the interactions occur in a certain way it causes an emission. If so, will this also work for gamma emission? Could you not only model where in the system the emission occurs, but its direction?