Introduction To Health Physics
Introduction To Health Physics
5th Edition
ISBN: 9780071835275
Author: Johnson, Thomas E. (thomas Edward), Cember, Herman.
Publisher: Mcgraw-hill Education,
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Chapter 4, Problem 4.16P
To determine

The comparison of specific activities of 234U, 235Uand 238U.

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Find the radius of a nucleus of  238 92 U  and  16 8 O.   a.  238 92 U  fm   b.    16 8 O  fm   See attached image for reference.
Technetium has not been found in nature. It can be obtained readily as a product of uranium fission in nuclear power plants, however, and is now produced in quantities of many kilograms per year. One medical use relies on the tendency of 99mTc (an excited nuclear state of 99Tc) to concentrate in abnormal heart tissue. Calculate the total activity (in disintegrations per second) caused by the decay of 1.0 mg of 99mTc, which has a half-life of 6.0 hours.
The radioactive isotope, 14 6 C does not occur naturally but it is found at constant rate by the action of cosmic rays on the atmosphere. It is taken up by plants and animals and deposited in the body structure along with natural carbon, but this process stops at death. The charcoal from the fire pit of an ancient camp has an activity due to 146C of 12.9 disintegrations per minute, per gram of carbon. If the percentage of 146C compared with normal Carbon in living trees is 1.35 × 10−10%, the decay constant is 3.92 × 10−10 s−1 and the atomic weight = 12.0, what is the age of the campsite?
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