| 摘要 |
A device is presented to measure radiation in a well drilled in a geological formation. The device comprises at least one sensing arrangement, a light source, and a light sensor. The sensing arrangement comprises an optically stimulated luminescence material arranged to be positioned near a zone of interest such as to accumulate radiation emitted by the zone of interest over a defined accumulation delay. The light source is arranged to optically stimulate emission of a luminescence light by the sensing arrangement with a stimulation light according to a first wavelength range. And the light sensor is arranged to measure the luminescence light emitted by the sensing arrangement according to another wavelength range, a measured intensity of the luminescence light related to the accumulated radiation.
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