Jack was exposed to fast neutrons; he received a radiation dose of 240 rem on pa

Question

Jack was exposed to fast neutrons; he received a radiation dose of 240 rem on part of his hand, affecting 24.0 grams of tissue. The relative biological effectiveness (RBE) of these neutrons is 9.00.

A) How much radiation did Jack receive? Answer in rad

B) What was the total energy of the radiation Jack received? Answer in J

C) Suppose Jill received the same rad dosage, but from beta rays with an RBE of 1.50 instead of from neutrons. What is the value of the equivalent dose she received? Answer in rem

Explanation / Answer

1. Deq=D*(RBE)
Deq=240 RBE=9
Therefore D=Deq/RBE=240/9=26.67 rad

2. 1 rad = .01 J/Kg
26.67(J/Kg)*.024Kg= .64008J

3. Deq=26.67(rad) * 1.5
Deq = 40.07 rem

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