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Which outcome causes accelerated wear in fusion reactor walls?

A)Neutron activation produces radioactive isotopes
B)Helium embrittlement reduces material ductility
C)Magnetic confinement dissipates energy
D)Plasma quenches triggers runaway reactions

💡 Explanation

Helium embrittlement causes accelerated wear because helium atoms, generated by fusion neutrons interacting with the reactor wall, diffuse into the material and form bubbles; therefore, ductility decreases rather than increased activation or plasma effects, leading to easier cracking under stress.

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