  In this paper we are able to justify the existence or no of photons emitted
during $\alpha$ decay, based on the average half life times using the BCS
superconductivity and superfluidity theories. The proposed model suggests two
possible channels. A first channel where the protons and neutrons interact
separately through a spin coupling, giving rise to diprotons and dineutrons
which in turn interact through an isospin coupling to form an $\alpha$
particle, and a second channel where the protons and neutrons are treated as
nucleons that interact through an isospin coupling, giving rise to deuterons,
which in turn interact through a spin coupling to form an $\alpha$ particle.
Due to the nature of the involved particles, the systems considered are
homogeneous. For the second channel, the photon play a very important role for
the possible escape of the $\alpha$ particle. Within these premises the half
life times of a considerable number of heavy nuclei with spherical symmetry can
be estimated with good experimental agreement.
