See picture Jack was exposed to fast neutrons; he received a radiation dose of 1

Question

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Jack was exposed to fast neutrons; he received a radiation dose of 120rem on part of his hand, affecting 30.0grams of tissue. The relative biological effectiveness (RBE) of these neutrons is 10.0. How much radiation did Jack receive? Express your answer in rads to three significant figures. What was the total energy of the radiation Jack received? Express your answer in joules to three significant figures. 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? Express your answer in rems to three significant figures

Explanation / Answer

a)

Abosrbed radiation =120/10 =12 rad

b)

1 rad =0.01J/Kg

Absorbed radiation =12*0.01=0.12 J/Kg

total energy received by jack is

E=0.12*0.03

E=0.0036 J

c)

Absorbed radiation =12 rad

BDE =Absorbed radiation dosage*RBE =12*1.5

BDE=18 rem

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