(a) Background radiation due to 226 Ra averages only0.01 mSv/y, but it can range upward depending on where aperson lives. Find the mass of 226 Ra in the 80.0-kg body ofa man who receives a dose of 2.50-mSv/y from it, noting thateach 226 Ra decay emits a 4.80-MeV α particle. You mayneglect dose due to daughters and assume a constantamount, evenly distributed due to balanced ingestion andbodily elimination. (b) Is it surprising that such a small masscould cause a measurable radiation dose? Explain.

The radiation dose in rem is The dose in rad provided that the RBE for particle is 20 can be found…

Answered: (a) Background radiation due to 226 Ra…

College Physics

1st Edition

ISBN:9781938168000

Author:Paul Peter Urone, Roger Hinrichs

Publisher:Paul Peter Urone, Roger Hinrichs

Chapter32: Medical Applications Of Nuclear Physics

Section: Chapter Questions

Problem 23PE: (a) Background radiation due to 226Ra averages only 0.01 mSv/y, but it can range upward depending on...

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(a) Background radiation due to ²²⁶ Ra averages only
0.01 mSv/y, but it can range upward depending on where a
person lives. Find the mass of ²²⁶ Ra in the 80.0-kg body of
a man who receives a dose of 2.50-mSv/y from it, noting that
each ²²⁶ Ra decay emits a 4.80-MeV α particle. You may
neglect dose due to daughters and assume a constant
amount, evenly distributed due to balanced ingestion and
bodily elimination. (b) Is it surprising that such a small mass
could cause a measurable radiation dose? Explain.

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