Calculate the minimum detectable true activity


At a certain facility, gross and background counts are made for the same length of time, and a(alpha)=0.050 and B(beta)=0.025. The background is not accurately known beforehand. Calibration at the facility shows that one net count corresponds to a sample activity of 260 Bq. The minimum significant measured activity is 159 Bq. Calculate the minimum detectable true activity.

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Physics: Calculate the minimum detectable true activity
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