Q7. A 50 µCi source emitting 5-MeV alpha particles is suspended between the palates of a large gas ionization chamber. If the emitted alpha particle loses all its energy in the chamber gas, calculate the current measured at the output. Assume that the average energy to create an ion pair in the gas is 34 eV and that all the charges produced in the chamber are collected.

Q7. A 50 µCi source emitting 5-MeV alpha particles is suspended between the palates of a large gas ionization chamber. If the emitted alpha particle loses all its energy in the chamber gas, calculate the current measured at the output. Assume that the average energy to create an ion pair in the gas is 34 eV and that all the charges produced in the chamber are collected.