Influence of γ-dose, dopant/codopant and heating rate on thermoluminescence properties of CaWO{sub 4} phosphors

A series of Ca{sub 1-2x}K{sub x}Dy{sub x}WO{sub 4} (x = 0.02, 0.03, 0.04) phosphors were prepared by solid state reaction method and their thermoluminescence properties were investigated. Before thermoluminescence measurements, the sample was heated to 300°C for 1hour and then quenched to room tempe...

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Bibliographic Details
Published in:AIP conference proceedings 2015-08, Vol.1675 (1)
Main Authors: Ambast, A. K., Sharma, S. K.
Format: Article
Language:English
Subjects:
ABUNDANCE
CALCIUM TUNGSTATES
CONCENTRATION RATIO
DYSPROSIUM COMPOUNDS
GLOW CURVE
HEATING RATE
IRRADIATION
MATERIALS SCIENCE
POTASSIUM COMPOUNDS
RADIATION DOSES
RADIATION PROTECTION AND DOSIMETRY
SOLIDS
TEMPERATURE DEPENDENCE
TEMPERATURE RANGE 0273-0400 K
THERMOLUMINESCENCE
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Summary:A series of Ca{sub 1-2x}K{sub x}Dy{sub x}WO{sub 4} (x = 0.02, 0.03, 0.04) phosphors were prepared by solid state reaction method and their thermoluminescence properties were investigated. Before thermoluminescence measurements, the sample was heated to 300°C for 1hour and then quenched to room temperature to erase out all the previous radiation memory. The prepared phosphors were irradiated by γ-ray in the dose range 1KGy–5KGy and their glow curves were recorded at an uniform rate of 5°C/s. In order to see the effect of heating rate as well as concentration of dopant/codopant, TL glow curves were also recorded by heating the samples at the rate of 3°C/s and 7°C/s as well as by varying the concentration x = 0.02, 0.03, 0.04.
ISSN:0094-243X
1551-7616
DOI:10.1063/1.4929269