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Consider a high energy photon interacting in tissue. The photon first interacts via pair production before...

Consider a high energy photon interacting in tissue. The photon first interacts via pair production before undergoing a Compton Interaction. The positron from pair production undergoes annihilation at the end of its life (no longer in-flight). One annihilation photon undergoes a Compton interaction and scatters at an angle of 100 degrees.

Calculate the kinetic energy of the scattered photon.

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