What does a Thermoluminescent Dosimetry (TLD) badge measure?

A Thermoluminescent Dosimetry (TLD) badge measures radiation exposure by utilizing the properties of solid crystals that capture and store energy from ionizing radiation. When these crystals are exposed to radiation, they absorb energy, which is then released as light when they are heated. The intensity of this light is proportional to the amount of radiation exposure the badge received, allowing for an accurate measurement of accumulated exposure over time.

This method is particularly effective for tracking doses of ionizing radiation such as gamma rays and other high-energy radiation. In contrast to real-time measurement instruments, TLD badges provide a cumulative record of exposure, which is essential for monitoring the safety of individuals working with or around radioactive materials. The other answer choices specifically limit the type of radiation measured, focus on different detection principles like gas ionization, or imply immediate monitoring, which does not apply to TLD technology.