The material used by LANDAUER for this technology is lithium fluoride, LiF.
> TLD dot
Like the OSL, the thermoluminescence dosimetry (TLD) technology is
based on the principle of detecting light emission following stimulation
of the irradiated material. For TLD, the stimulation is achieved by
heating the dosimeter.
Unlike OSL, in which very little of the trapped charge is stimulated, thermally stimulating the material empties most of the rapped charge. They cannot generally be re-read with accuracy.
The LiF detectors are small and relatively tissue equivalent. LANDAUER uses them for measurements of extremity doses (eg Rings dosimeters).