(Answered) A an ionization chamber is used with an electrometer

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a) An ionization chamber is used with an electrometer capable of measuring 50µA. Calculate the rate at which 0.835MeV beta particles must enter the chamber to just produce a measurable response.

b) These beta particles produce on the average 80 ion pairs in a counter operating in the proportional region with a gas amplification factor of 6´104.At what rate will the particles need to enter the chamber to produce an average current of 50µA?

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