Which personnel monitoring device is specifically designed to give immediate feedback on radiation exposure?

The pocket dosimeter is specifically designed to provide immediate feedback on radiation exposure. This hand-held device contains a small ionization chamber that registers exposure to radiation in real time. Users can easily read the meter on the dosimeter to determine their current dose with a simple glance, making it invaluable for situations where prompt information about radiation exposure is necessary, such as during procedures involving direct exposure to radiation.

In contrast, other monitoring devices, such as film badges and thermoluminescent dosimeters (TLDs), provide cumulative exposure readings but do not offer immediate feedback. Film badges require processing and developing to assess exposure, while TLDs must be analyzed in a reader after exposure to reveal the dose. Ionization chambers are generally used for specific measurements rather than personal monitoring, and while they accurately quantify radiation levels, they do not function as personal monitoring devices in the same immediate feedback capacity as pocket dosimeters.