Optically stimulated luminescence

Labs # 0315 - # 1110

Quartz and feldspars produce optically stimulated luminescence (OSL). The OSL signal is dependent upon the period of time that has passed since the mineral grain was last exposed to sunlight, and/or the period of time that the mineral has been held at an ambient temperature of ≤ 30 °C. It is also dependent on the environmental dose rate of naturally occurring radiation. Image icon, by courtesy of G. Duller.

   Lab # 0315 - Phone 4424
   Lab # 1110 - Phone 4459


Risø TL/OSL reader DA-20

Optically stimulated luminescence is a versatile technique which can be used to determine the age of a depositional feature such as a glacial moraine (OSL dating) or alternatively the erosion and/or uplift rate of a mountain (OSL thermochronology). The OSL laboratory is presently equipped with a single Risø TL-DA-20 reader with time-resolved pulsed-OSL and photon-timer attachment. A second instrument will be ordered from Risø shortly, equipped with a dual infra-red and green laser single-grain dating system.

   Contact: Frederic.Herman@unil.ch