What feature distinguishes OSL dosimeters from TLDs in practical applications?

Optically Stimulated Luminescence (OSL) dosimeters have a notable feature that sets them apart from Thermoluminescent Dosimeters (TLDs): the ability to be read multiple times without losing their stored information. OSL dosimeters utilize a process where stored energy released as light can be stimulated and measured using a laser or other light source. This allows the dosimeter to be read, processed, and then reused for further measurements without any degradation of the material or loss of the dosimeter's functionality.

In contrast, TLDs require heating to release the stored energy, which effectively makes them a one-time read device; once read, they need to be reset by being heated again. Therefore, the ability to perform multiple readings on OSL dosimeters provides a significant advantage in practical applications, especially in scenarios where ongoing monitoring is required without the need for frequent replacements or resets. This feature enhances their usability and efficiency in radiation detection programs.