Question: How accurate is OSL dating?


How does OSL dating work?

Optically-Stimulated Luminescence is a late Quaternary dating technique used to date the last time quartz sediment was exposed to light. Once this sediment is deposited and subsequently buried, it is removed from light and is exposed to low levels of natural radiation in the surrounding sediment.

What is the difference between OSL and TL?

Optically stimulated luminescence (OSL) and thermoluminescence (TL) are similar techniques widely used in radiation dosimetry. The main difference between these techniques is the stimulus to induce luminescence emission: TL technique uses thermal stimulation, whereas OSL uses optical stimulation.

What is OSL mode?

The mechanism of OSL involves illumination of an irradiated crystal with a specific wavelength of light to initiate the movement of charge trap sites to luminescent centers. The basic difference is the stimulant, light versus heat. McKeever (2001) presented an excellent review of the various light stimulation modes.

How far back can thermoluminescence go?


How low of a value will an OSL dosimeter read?

Unlike a TLD, OSL dosimeters can be reread multiple times. will be a decrease of signal of less than one percent in a second reading. Used OSL badges are often archived for several years. No fading except in extreme temperatures.

Reach out

Find us at the office


Give us a ring

Tristian Espalin
+61 275 909 392
Mon - Fri, 7:00-15:00

Reach out