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← ScienceWhich mechanism initiates fusion in a tunnel diode?
A)Quantum mechanical tunneling✓
B)Thermionic emission overcoming barrier
C)Avalanche multiplication of carriers
D)Diffusion of majority carrier holes
💡 Explanation
Fusion, or electron movement, occurs by quantum mechanical tunneling because electrons pass through the depletion region energy barrier despite insufficient energy. Thermionic emission requires higher temperatures rather than band bending allowing tunneling.
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