What material is used in an optically stimulable luminescent dosimeter (OSL)?

An optically stimulable luminescent dosimeter (OSL) primarily uses aluminum oxide (Al2O3) as its sensing material. In this type of dosimeter, aluminum oxide is capable of trapping electrons when it is exposed to ionizing radiation. When the dosimeter is subsequently stimulated with specific wavelengths of light, these trapped electrons are released, resulting in luminescence. The intensity of light emitted is proportional to the amount of radiation the dosimeter was exposed to, which allows for accurate measurement of the dose received.

Aluminum oxide is chosen for its effective response to radiation and its stability, making it suitable for various applications in radiation monitoring. Its use leads to a range of advantages, such as high sensitivity, a wide dose range, and the capability for reusability, enhancing its utility in both personal and environmental dosimetry.