Which outcome occurs when a smoke detector's americium-241 source ages?

💡 Explanation

Reduced alpha particle flux occurs as americium-241 undergoes alpha decay, because its half-life causes the rate of decay to decrease over time. Therefore, fewer alpha particles ionize less air in the chamber, rather than increased voltage or unrelated cesium production.

• Which effect occurs when catalytic activity is decreased by poisoning?
• Which effect is worsened when dielectric spacing decreases in resonant cavity waveguides at gigahertz frequencies?
• Which mechanism reduces thermal efficiency when steam turbine blades accumulate moisture?
• Which outcome occurs as gravitational confinement increases around protostar deuterium?
• Which consequence typically results when quenching steel from austenite?
• Which outcome inhibits the operation of an EMP generator?