Study of thermoluminescence and trapping parameter evaluation of K3Ca2(SO4)3F: Mn2+ phosphor in perspective of TLD application.

The series of Mn²⁺ single doped fluoride-based K₃Ca₂(SO₄)₃F phosphor was prepared by the conventional high temperature solid-state reaction method. The formation of phase purity and morphology was studied by the XRD and SEM analyses. The prepared material was irradiated by γ-rays from ⁶⁰Co source and the thermoluminescence (TL) characteristic was carried out by Nucleonix 1009I TL reader. The prominent TL dosimetry peak observed for K₃Ca₂(SO₄)₃F:1mol% Mn²⁺_, annealed at 800°C centred at 217°C, revealed deeper traps. The TL exhibits a linear response as a function of dose rate up to 4 kGy. The computerised glow curve deconvolution (GCD) method, employed for the analysis of TL glow curve, shows the kinetics of the first order. The trapping parameters were evaluated using Chen's peak shape method, initial rise method and Ilich method. The results exhibit that the synthesised phosphor was found to be a potential candidate for radiation dosimetry applications. [ABSTRACT FROM AUTHOR]