The main dosimetric properties are reported of a new perovskite, LiMgF3, doped with Ce, Er and Dy impurities. An annealing temperature of 400°C for one hour is necessary to erase any previous signal and to stabilise its sensitivity. A readout up to 450°C gives the same result. The glow curve structure consists of two intense and isolated glow peaks at 170°C and 315°C. The sensitivity of both glow peaks to beta irradiation increases as the dopant concentration increases. The sensitivity is higher than that of LiF:Mg,Ti using the glow peaks 4+5 integral. Other properties like TL dose response, fading, sensitivity versus successive readout and ammealing cycles, sensitivity versus the heating rate, sensitivity to light and trapping parameter evaluation were also carried out.
|Number of pages||4|
|Journal||Radiation Protection Dosimetry|
|State||Published - 1 Jan 2002|
ASJC Scopus subject areas
- Radiological and Ultrasound Technology
- Radiology Nuclear Medicine and imaging
- Public Health, Environmental and Occupational Health