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← ScienceWhich mechanism limits the efficiency as Helium-3 nuclei fuse?
A)Coulomb repulsion overcomes binding energy✓
B)Neutron capture forming heavy isotopes
C)Weak force permits beta decay channels
D)Quantum tunneling inhibits proton penetration
💡 Explanation
As Helium-3 nuclei approach, Coulomb repulsion increases the potential energy barrier until it overcomes the attractive nuclear binding energy, therefore fusion ceases, rather than neutron capture which would necessitate ample free neutrons with proper speed available during fusion.
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