Abstract
The thermoluminescence (TL) characteristics, effect of γ-radiation on NaMgSO4Cl: X (X = Tb; Ce, Tb; Dy; Dy, Eu) and trapping parameters in TL material prepared by wet chemical synthesis (WCS) method are studied. The intensity of these phosphors is compared with TLD CaSO4: Dy phosphor. The phosphor has a simple TL glow curve structure. The phosphors NaMgSO4Cl: Tb (between the range of 257–284°C); NaMgSO4Cl: Dy (173°C) and NaMgSO4Cl: Dy, Eu (156°C) have a single prominent peak, whereas NaMgSO4Cl: Ce, Tb has two peaks located at 154°C and 233°C indicating single and double trapping sites, respectively. It is found that intensity tends to be increase with increased concentrations of the activators. The TL glow curves of the phosphors have been recorded and irradiated at a rate of 0.99 kGyh−1 for 5 Gy γ-rays dose. The paper also discusses the kinetic parameters evaluated by Chen's half width method such as activation energy E (eV) and frequency factor S (s−1).
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