Which personal dosimeter is considered the most accurate for dose tracking over time?

The thermoluminescent dosimeter (TLD) is considered the most accurate option for dose tracking over time because of its ability to provide precise and reliable measurements of ionizing radiation exposure. TLDs utilize materials that store energy from radiation exposure and release it as light when heated. This property allows for accurate readings of cumulative dose over extended periods, which is critical for monitoring radiation exposure in various settings.

The sensitivity of TLDs is particularly beneficial, as they can detect low levels of radiation, making them effective for environments where radiation exposure varies over time. Additionally, TLDs are relatively unaffected by environmental factors like humidity and temperature, contributing to their stability and reliability.

While other dosimeters, such as film badges and electronic personal dosimeters, have their respective benefits, they may not provide the same level of accuracy or long-term tracking capabilities that TLDs offer. Film badges require development and may not be able to measure low doses as effectively as TLDs, while electronic dosimeters provide real-time readings but may have limitations in long-term dose accumulation due to battery life and the need for calibration. Consequently, TLDs represent the most accurate tool for dose tracking over time among the options provided.