Thermoluminescence properties of LiMgF3 doped with Ce, Er and Dy.
The main dosimetric properties are reported of a new perovskite, LiMgF3, doped with Ce, Er and Dy impurities. An annealing temperature of 400 degrees C for one hour is necessary to erase any previous signal and to stabilise its sensitivity. A readout up to 450 degrees C gives the same result. The glow curve structure consists of two intense and isolated glow peaks at 170 degrees C and 315 degrees 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.
Kitis
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G
Aristotle University of Thessaloniki, Nuclear Physics Laboratory, Greece.
Furetta
C
C
Sanipoli
C
C
D002563:Cerium / Q000737:chemistry; D004419:Dysprosium / Q000737:chemistry; D004871:Erbium / Q000737:chemistry; D005459:Fluorides / Q000737:chemistry / Q000528:radiation effects*; D006358:Hot Temperature; D007700:Kinetics; D008027:Light; D018020:Lithium Compounds / Q000737:chemistry / Q000528:radiation effects*; D017616:Magnesium Compounds / Q000737:chemistry / Q000528:radiation effects*; D011854:Radiochemistry; D012680:Sensitivity and Specificity; D013819:Thermoluminescent Dosimetry / Q000379:methods* / Q000706:statistics & numerical data
D018020:Lithium Compounds; D017616:Magnesium Compounds; C027651:lithium fluoride; D004419:Dysprosium; D002563:Cerium; C031288:magnesium fluoride; D004871:Erbium; D005459:Fluorides