Semiclassical approach to nuclear gamma resonance in crystals

The emission of phonons produced under the absorption or emission of a γ quantum (or the scattering of an electron or a neutron) by an atomic nucleus in a crystal lattice is a Poisson process from the probability point of view. This approach enables, in particular, an expression for the Mössbauer effect probability to be derived in a simple and transparent manner without the cumbersome mathematical (quantum-mechanical) computations being involved.