A 5.0 105 Bq 241Am alpha source is used in a smokealarm. The device is arranged so that
Chapter 13, Problem 49(choose chapter or problem)
A 5.0 105 Bq 241Am alpha source is used in a smokealarm. The device is arranged so that 15% of the decayalphas are detected. (a) What current is detected?(b) If the introduction of smoke causes a 10% changein the intensity of the alpha particles, what sensitivitymust the electronic circuit have to cause an alarm?
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