Which radiation monitor is most suitable for determining dose received by a radiation worker immediately after exposure?

The pocket dosimeter is particularly suitable for determining the dose received by a radiation worker immediately after exposure due to its design and functionality. Pocket dosimeters are small, portable devices that contain a dose measurement mechanism, typically a miniaturized ionization chamber or a similar technology. They are designed to provide real-time readings, allowing immediate assessment of radiation exposure.

When a radiation worker has been exposed, the pocket dosimeter can be read on-site, giving an instant indication of the dose accumulated during the work shift or specific task. This immediate feedback is crucial for ensuring the safety of workers and for complying with radiation safety regulations.

In contrast, while survey meters and Geiger-Muller counters are excellent tools for assessing environmental radiation or contamination levels, they do not provide personalized dose measurements for individuals. Environmental monitors are intended for broad area monitoring and assessing radiation levels in a surrounding environment rather than for individual exposure assessment. Thus, the pocket dosimeter stands out as the best choice for determining immediate dose levels for radiation workers.