In this paper the main features of tunneling travelling are illustrated between two deuterons within a lattice. Considering the screening effect due to lattice electrons we compared the d-d fusion rate evaluated from different authors assuming different screening efficiency and different d-d potentials. Then, we proposed an effective potential which describes very well the attractive contribution due to plasmon exchange between two deuterons and by means of it we will compute the d-d fusion rates for different energy values.
Key words: Dissociation energy, interaction between two deuterons, effect tunnel.Corresponding author: Frisone Fulvio, nuclear researcher, research fields: theoretical physics, nuclear physics, low energy nuclear reactions, structure of matter, condensed matter science of metals. tunneling travelling of Coulomb barrier existing between two deuterons. More exactly, it will analyze the possible contributions of the lattice in order to enhance the tunneling probability and, in this way, we will find that there is a real mechanism by means of which this probability is increased a lot: this mechanism is the screening effect due to the d-shell electrons of palladium lattice.