Passive Dosimeter Based on BaBrF:Tm\(^{3+}\) Phosphor for \(\gamma\)-ray Dosimetry
DOI:
https://doi.org/10.26713/jamcnp.v9i1.1957Keywords:
TLDs, Thermoluminescence, Dosimetry, Phosphor, RadiationAbstract
Thulium (Tm\({}^{3+}\)) ions doped Barium Bromide Fluoride (BaBrF) samples were synthesized successfully through the solid-state diffusion method. The crystal structure and phase purity of the synthesized sample were examined by Powder X-Ray Diffraction (PXRD) analysis. Dosimetric properties of \(\gamma\)-ray exposed samples of BaBrF:Tm\({}^{3+}\) investigated. To obtain the maximum Thermoluminescence (TL) sensitivity of the material, the dopant concentration level and annealing temperature were optimized. It is observed that the dopant concentration 2.0 mol% of Tm\({}^{3+}\) and the annealing at 673 K temperature the phosphor material exhibits maximum TL intensity. The \(\gamma\)-Ray dose-response, fading of the TL signal, and kinetic parameters of the TL glow curve were also investigated. TL sensitivity of the BaBrF:Tm\({}^{3+}\) phosphor compared to the commercially available CaSO\({}_{4}\):Dy (TLD-900) dosimeter used for radiation measurement. On the basis of their promising dosimetric characteristics, it can become a good TL dosimeter for passive dosimetry of high energy \(\gamma\)-ray radiation.
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