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← ScienceWhich mechanism increases alpha particle emission rate in uranium?
A)Quantum tunneling through a potential barrier✓
B)Radioactive decay by beta emission
C)Nuclear fission chain reaction propagation
D)Neutron capture cross-section enhancement
💡 Explanation
Alpha particle emissions happens because the alpha particles tunnel through the potential energy barrier of the nucleus via quantum tunneling, enabling escape despite insufficient energy; therefore emission rate increases, rather than fission or neutron capture, because these initiate different breakdown routes.
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