Studies of the Dosimetric Properties of Watch Jewels

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Abstract
In September 1982 a worker was accidentally exposed to gamma radiation at the Institute for Energy Technology in Kjeller, Norway. He died 13 days later as a consequence of the irradiation. Various methods were used to estimate the dose, including the measurement of thermoluminescence from jewels contained in the worker's wrist watch. These measurements were made at Riso National Laboratory. Subsequently, further studies were carried out in order to provide more information on the applicability of watch jewels as accident dosemeters. Three different types of jewels were investigated. The TL sensitivity was found to vary strongly from one jewel to another, and significant fading was observed. For the most sensitive jewels the lowest detectable dose was of the order of 1 Gy.

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