What function does an ionization survey meter perform?

The function of an ionization survey meter centers around measuring the current generated when ionizing radiation interacts with the gas inside the meter. When radiation passes through the gas, it ionizes the gas molecules, resulting in the production of charged particles. This ionization creates a current that the meter can measure. By measuring this current, the ionization survey meter allows for assessment of radiation levels and helps to ensure safety in environments where ionizing radiation is present.

Choosing the option that states it measures current to restore the electrical field accurately reflects this primary function of the device. The other choices misrepresent the specific capabilities of ionization survey meters. For example, detecting only alpha particles or gamma radiation, or converting radiation exposure to equivalent dose, does not encompass the comprehensive role of these meters in radiation detection and measurement. Instead, they are versatile tools that can measure a variety of ionizing radiation types, including alpha, beta, and gamma radiation, depending on the specific design and configuration of the meter.