What is the primary function of thermoluminescent dosimeters (TLDs)?

Thermoluminescent dosimeters (TLDs) are primarily used to measure the accumulated radiation dose over a specified period. This capability is essential in fields such as radiation safety, medical applications, and research, where understanding the total radiation exposure an individual or object has received is critical.

TLDs work by incorporating materials that store energy when they are exposed to ionizing radiation. When subsequently heated, these materials release the stored energy in the form of light, which can be measured. The amount of light emitted is directly proportional to the amount of radiation absorbed. This allows for an accurate assessment of the total dose received over time, making TLDs effective in long-term monitoring of radiation exposure rather than providing real-time measurements.

Unlike devices that read radiation levels instantly or those that measure environmental conditions, TLDs are specifically designed for dose integration, making them vital for ensuring safety and compliance with exposure limits in various environments where radiation is present.