Time-resolved OSL studies of YAlO3:Mn2+ crystals

• Time-resolved OSL from single crystalline YAlO3:Mn2+ was investigated using a green light (λ ∼ 525 nm) stimulation.
• The OSL decay of the material is single exponential (τ∼80 ms) and does not depend on irradiation dose.
• The Mn2+ photoluminescence (τ∼3.5 ms) can be easily eliminated by time resolution using the pulsed OSL readout.

Time-Resolved Optically Stimulated Luminescence (TR-OSL) from single crystalline YAlO3:Mn2+ samples was investigated using a green light emitting diode (λ ∼ 525 nm) as stimulation light source. The TR-OSL decay curve of the material can be described with a single exponential decay function with a lifetime about 80 ms that does not depend on irradiation dose in the range from 50 mGy to 1 kGy. This OSL decay is superposed on a photoluminescence signal with a much shorter (3.5 ms) decay lifetime. The Mn2+ photoluminescence decay with a lifetime of 3.5 ms can be easily eliminated by corresponding time resolution using pulsed OSL readout. Dose response and thermal stability of the OSL signal are consistent with the previous thermoluminescent (TL) studies of the material.