What is a pocket ionization chamber primarily used for?

A pocket ionization chamber is primarily used for personal dosimetry, which involves measuring the exposure of individuals to ionizing radiation. This device is designed to provide real-time monitoring of radiation doses received by personnel working in environments where they may be exposed to radiation, such as hospitals, laboratories, or nuclear facilities.

The functionality of a pocket ionization chamber allows it to measure radiation ionization levels, and it typically provides a way for individuals to carry it conveniently, thus making it easy to use throughout the workday. This immediate feedback on radiation exposure helps in ensuring that workers do not exceed regulatory dose limits, thereby enhancing safety and health protection.

In contrast, other options like medical imaging, nuclear power monitoring, and radiation therapy involve different types of radiation detection and dosimetry devices suited for specific applications, rather than the pocket ionization chamber's purpose in monitoring personal radiation exposure.