研究目的
Investigating the photostimulated and persistent luminescence of samarium ions in BaFCl for applications in storage phosphors.
研究成果
The co-precipitated BaFCl:Sm3+ sub-micron powder becomes an efficient photostimulable X-ray storage phosphor after annealing at higher temperatures, with maximum PSL and PersL intensities observed upon annealing at 500 °C for 4 h. Crystal size affects the PSL, PersL, and TL in the BaFCl:Sm system, with the macroscopic crystal displaying maximum PersL signal and the annealed co-precipitated sample showing maximum PSL intensity.
研究不足
The study is limited by the specific conditions of sample preparation and annealing, and the focus on samarium ions in BaFCl, which may not be directly applicable to other materials or dopants.
1：Experimental Design and Method Selection:
The study involved the preparation of BaFCl:Sm3+ sub-micron crystals by co-precipitation and their annealing at various temperatures to investigate PSL, PersL, and TL properties.
2：Sample Selection and Data Sources:
Samples included co-precipitated BaFCl:Sm3+ sub-micron crystals, a macroscopic BaFCl:Sm2+ crystal, and ball-milled BaFCl:Sm2+ nanopowder.
3：List of Experimental Equipment and Materials:
Equipment used included a Rigaku MiniFlex 600 benchtop diffractometer, Horiba Jobin-Yvon Spex Fluoromax-3 fluorometer, Spex 500M monochromator with an Andor iDus camera, and a Thorlabs 980 nm laser diode.
4：Experimental Procedures and Operational Workflow:
Samples were X-irradiated, and their luminescence properties were measured after specific delays. TL measurements were conducted using a hotplate.
5：Data Analysis Methods:
Data were analyzed using Rietveld refinements and fitting with exponential functions to understand the kinetics of luminescence.
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