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Published: 2014-12-30
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DOI: https://doi.org/10.53747/jnst.v4i4.241
Issue
Vol. 4 No. 4 (2014)
Section
Articles
How to Cite
Ha , X. V., Doan , P. T. T., & Nguyen , C. T. (2014). Preparation of Tb³⁺-doped K₂GdF₅ Used to Neutron Dosimetry. Nuclear Science and Technology, 4(4), 30-37. https://doi.org/10.53747/jnst.v4i4.241

Preparation of Tb³⁺-doped K₂GdF₅ Used to Neutron Dosimetry

Ha Xuan Vinh1, Doan Phan Thao Tien1, Nguyen Chi Thang1
1 Nhatrang Institute of Technology Research and Application (NITRA-VAST) 02 Hung Vuong, Nhatrang, Khanhhoa

Main Article Content

Abstract

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.

Article Details

Keywords

K₂GdF₅, Tb³⁺, thermoluminescence, neutron dosimeter

References

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