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Radiation Protection Dosimetry 34:83-86 (1990)
© 1990 Oxford University Press
Archaeological Dating by Infrared-Stimulated Luminescence Using a Diode Array
An infrared diode array (emitting at 880 ± 80 nm) has been developed and tested on archaeologically-dated Romano-British sediment. There was good agreement with the latter and also with optical dating using 514 nm from a laser. The signal/background ratio for infrared stimulation was about 10 times that for laser stimulation. Twenty four diodes were used in the array giving a power at the sample of about 15 mW.cm-2. Intensity and wavelength drifts after switch-on necessitate a warming-up period, and a photodiode is used for monitoring/manual control; illumination of the sample is controlled by a shutter.
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