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Durham University

Department of Archaeology

Staff

Publication details for Professor Ian Bailiff

Image: Spatially-resolved measurement of optically stimulated luminescence and time-resolved luminescenceBailiff, I. K. & Mikhailik, V. B. (2003). Spatially-resolved measurement of optically stimulated luminescence and time-resolved luminescence. Radiation Measurements 37(2): 151-159.

Author(s) from Durham

Abstract

Spatially-resolved measurements of optically stimulated luminescence (OSL) were performed using a two-dimensional scanning system designed for use with planar samples. The scanning system employs a focused laser beam to stimulate a selected area of the sample, which is moved under the beam by a motorised stage. Exposure of the sample is controlled by an electronic shutter. Mapping of the distribution of OSL using a continuous wave laser source was obtained with sub-millimeter resolution for samples of sliced brick, synthetic single crystal quartz, concrete and dental ceramic. These revealed sporadic emission in the case of brick or concrete and significant spatial variation of emission for quartz and dental ceramic slices. Determinations of absorbed dose were performed for quartz grains within a slice of modern brick. Reconfiguration of the scanner with a pulsed laser source enabled quartz and feldspathic minerals within a ceramic sample to be differentiated using a single stimulation wavelength by measuring the time-resolved luminescence spectrum.