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Question: A burst of 1 x 109 neutrons from a pulsed accelerator is introduced into a subcritical assembly consisting of an array of natural uranium rods in water. The system has a multiplication factor of 0.968. Approximately 80% of the incident neutrons are absorbed in uranium.

Part A: How many first generation fissions do the neutrons produce in the assembly?

Please explain how you came to your conclusion.

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