Development of Osl Reader Systems for Radiation Dosimetry

Thermoluminescence (TL) and optically stimulated luminescence (OSL) techniques are known as a research tools for the study of phosphor materials and for their applications in radiation dosimetry in particular [1]. Although TL technique is known since several decades, OSL is relatively newer technique. The TL or OSL emission from an irradiated sample arises upon stimulation with heat or light respectively. During thermal/optical stimulation, the trapped charges are released from metastable trap levels and subsequently recombine with charges of opposite polarity and in the process emit light. The amount of emitted luminescence is proportional to absorbed dose.