A Cyclotron with a Proton Current of I = 1

question 19

Essay

A cyclotron with a proton current of I = 1.5 × 10¹⁴ protons/s is used to irradiate a target with n = 10¹⁸ neutrons/cm² in order to produce C-11 (T_1/2 = 20 min). The cross-section for the reaction is ó = 3 × 10^-26 cm². Calculate the activity after one hour of irradiation.

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