Intense emission of Ba2MgSi2O7:Eu2+ under X-ray excitation for potential detecting applications

Journal article (2017)

Authors

Yan Yan Sun Yat-sen University
Liu Liu Sun Yat-sen University
Vlieland Vlieland RST/Reactor Physics and Nuclear Materials - AS
Zhou Zhou Sun Yat-sen University
Dorenbos Dorenbos RST/Fundamental Aspects of Materials and Energy - AS
Huang Huang Chinese Academy of Sciences
Tao Tao Chinese Academy of Sciences
Liang Liang Sun Yat-sen University
Research Group
RST/Reactor Physics and Nuclear Materials (AS) (TU Delft)
Thermoluminescence Photoluminescence Ba2MgSi2O7 Radioluminescence Light yield Scintillation material
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Published Date

16-11-2017

Language

English

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Faculty

Applied Sciences

Department

RST/Radiation, Science and Technology

Research Group

RST/Reactor Physics and Nuclear Materials

Abstract

A series of Ba2-xEuxMgSi2O7 phosphors was prepared by a solid-state reaction method at high temperature. The theoretical density of the optimal Ba1.93Eu0.07MgSi2O7 material was calculated from the Rietveld refinement result. Eu L3-edge X-ray absorption near edge structure (XANES) spectrum was measured to confirm the valence of Eu ions in Ba2MgSi2O7. The X-ray excited radioluminescence and the thermoluminescence after β-ray irradiation were investigated based on the VUV-vis photoluminescence. The light yield of the optimal Ba1.93Eu0.07MgSi2O7 sample under X-ray excitation was estimated to be ~29,000±6000 photons/M eV. So the temperature-dependent luminescence properties of this sample under X-ray and 344 nm excitation were further studied, and the charge traps in the scintillation process were discussed through thermoluminescence spectra. The high scintillation intensity together with an appropriate intrinsic decay time and its non-hygroscopicity endow the further optimized phosphor Ba1.93Eu0.07MgSi2O7 a promising scintillation material for X-ray detection.