研究目的
To prepare and investigate the Cu doped SnO2 NPs for the electron dosimetry applications.
研究成果
Cu-doped SnO2 phosphor synthesized via hydrothermal method shows promising dosimetric properties for electron beam applications, with linear dose response up to 15.50 kGy, low fading, and good reproducibility, making it suitable for electron dosimetry.
研究不足
The study is limited to Cu-doped SnO2 nanoparticles and 6 MeV electron irradiation; other dopants or radiation types were not explored. Fading of 5.1% over 2 months may affect long-term stability, and saturation occurs at higher doses.
1：Experimental Design and Method Selection:
The study used a hydrothermal synthesis method for Cu-doped SnO2 nanoparticles, characterized by XRD, FESEM, and EDS. Thermoluminescence (TL) dosimetry was employed to study electron beam irradiation effects.
2：Sample Selection and Data Sources:
Samples were synthesized using tin chloride, sodium hydroxide, and copper chloride precursors. Two sets were prepared: un-annealed and annealed at 700°C.
3：List of Experimental Equipment and Materials:
Equipment includes XRD spectrometer (Bruker-AXS D8 ADVANCE), FESEM and EDS (FEI Nova Nano SEM 450 & Bruker X-Flash 6I30), TLD reader (Nucleonix), and a 6 MeV race track microtron accelerator. Materials include SnCl4·5H2O, NaOH, CuCl2, ethanol, and double distilled water.
4：Experimental Procedures and Operational Workflow:
Synthesis involved mixing precursors, hydrothermal reaction at 180°C for 24 hours, washing, drying, and annealing. Characterization involved XRD, FESEM, EDS, and TL measurements after electron irradiation at various fluences.
5：Data Analysis Methods:
Crystallite size was calculated using Scherrer equation. TL data were analyzed for dose response, fading, reproducibility, and glow curve deconvolution using Kitis equations and Figure of Merit (FOM).
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