Speaker
Description
Dosimeters based on thermoluminescent materials are an optimal solution over an extended range of applications.This work has been motivated by the difficulty, in my country, to access industrial TLD dosimeters on the international market, and by the resulting need to develop solutions that rely on local available and possibly cheap materials, without missing the goal to reach a high sensitivity, linear dose response, low background and low rate of fading.
We developed a method to prepare Dysprosium doped calcium sulphate (CaSO4:Dy) dosimeters, and we investigated the response of the TLD at different Dy concentrations. The manufactured samples were exposed to a Cs-137 source at doses up to 20 mGy. and the glow curves of the undoped and doped samples were studied.
The results showed an ideal thermal brilliance curve with a good peak of brilliance for all concentrations taken, which range between 0.07 mol% and 0.4 mol%, and for all doses.
CaSO4:Dy is therefore confirmed as good solution to prepare not expensive TLD dosimeters for a wide range of dosimetry purposes.
| Scientific Topic 4 | Shielding and dosimetry |
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