A radiation worker measures 24 mR on a pocket dosimeter after 12 minutes. What is the calculated exposure rate?

To determine the exposure rate measured by the pocket dosimeter, it is essential to use the data provided about the radiation dose and the time of exposure.

The worker recorded a dose of 24 mR after 12 minutes. To find the exposure rate in mR/h, it is necessary to convert the time from minutes to hours. There are 60 minutes in one hour, so 12 minutes is equivalent to 12/60 or 0.2 hours.

Next, to calculate the exposure rate, divide the total dose by the time in hours:

[

\text{Exposure rate} = \frac{\text{total dose (mR)}}{\text{time (h)}}

]

Plugging in the numbers:

[

\text{Exposure rate} = \frac{24 \text{ mR}}{0.2 \text{ h}} = 120 \text{ mR/h}

]

Thus, the calculated exposure rate is 120 mR/h, confirming that this is the correct answer. This exposure rate means that if the same conditions continued, the worker would accumulate 120 mR of exposure in one hour. This type of calculation is crucial for monitoring and managing radiation exposure levels for workers in