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A Cyclotron with a Proton Current of I = 2

Question 24

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A cyclotron with a proton current of I = 2 × 1014 protons/s is used to irradiate a target with n = 3 × 1020 neutrons in order to produce N-13 (T1/2 = 10 min). The cross-section for the reaction is ó = 3 × 10-26 cm2. Calculate the number of N-13 nuclei after 30 minutes of irradiation.

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4.2 × 1012 nuclei
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