Electron repulsion is irrelevant compared to the energies needed for fusion. It only takes a few eV to throw electrons out orbit, since they are so far away from the nucleus. On the other hand, a nucleus itself would be attracted to these electrons equally much approaching them and passing them, resulting in a net 0 effect.
The electrostatic effect of the 2 positive nuclei repelling is WAY larger due to the extremely small distances needed for fusion.
Electron repulsion is irrelevant compared to the energies needed for fusion. It only takes a few eV to throw electrons out orbit, since they are so far away from the nucleus. On the other hand, a nucleus itself would be attracted to these electrons equally much approaching them and passing them, resulting in a net 0 effect.
The electrostatic effect of the 2 positive nuclei repelling is WAY larger due to the extremely small distances needed for fusion.