# Positron-electron anihilation in the Sun

As 75% of the Sun is Hydrogen and 25% Helium and the latter derives from 4 hydrogen atoms where half of protons that formed neutrons expeled positive charges as positrons that anihilated with nearby electrons, so half of electrons are missing too. In that case 12.5% of all electrons and positrons(protons) that are now missing formed very energetic gamma-rays which must have a role in fusion reactions in the core.Maybe they partialy roll back to form electron-positron pairs but how much of energy in the core is due to mass defect of helium and how much of electron-positron anihilation?

The binding energy released from forming the $$\text{He}^4$$ nucleus is about $$0.03u$$. But the energy from removing two electrons is equal to their mass or about $$0.001u$$. So 3-4% of the contribution is from the electron loss.