Feasibility study of CaSO4:Tb,Yb as a thermoluminescent dosimeter

Junot, Danilo O.; Santos, M. A. B.; Chagas, Marcos Antonio Passos; Santos, M.A. Couto dos; Nunes, Luiz Antônio de Oliveira; Souza, Divanízia do Nascimento

doi:10.1016/j.radphyschem.2013.01.012

Cited by 10 publications

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References 5 publications

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“…Therefore, the simple methods for preparing neutron dosimeters are necessary. But until now, almost researches were focused on gamma, beta dosimeters [4][5][6]. The commercial dosimeters such as TLD-100 and TLD-900 have been studied so detail, but they are less sensitive to neutron irradiation.…”

Section: Introductionmentioning

confidence: 99%

Preparation of Tb³⁺-doped K₂GdF₅ Used to Neutron Dosimetry

Ha¹,

Doan²,

Nguyen³

2014

Nucl. Sci. and Tech.

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The neutron absorption section of gadolinium atom is very high, so that the K2GdF5 crystals doped with Tb3+ ions have been studied for neutron dosimetry by the thermoluminescence (TL) method. The K2GdF5 crystals doped 2%, 3% and 5% concentrations of Tb3+ ions were synthesized by solid state reaction method. The TL properties were studied after the exposure of the samples to neutron source. The experimental results showed that the TL glow-curves of K2GdF5:Tb3+ has the simple, suitable shape for the dosimetry applications. The TL sensitivity of this material is higher than that of commercial TLD-100 and TLD-900 dosimeters. The thermal fading effect of Tb3+-doped K2GdF5 is very low. The glow curve consists of the main peak at temperature of 202oC. The glow curve deconvolution into individual the peaks showed that the curve had a main peak at 202oC, and kinetic order b = 2. The study results indicated that the K2GdF5 doped with Tb3+ is very remarkable material can be applied in neutron dosimetry field.

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Section: Introductionmentioning

confidence: 99%