The thermoluminescence (TL) mechanism for un-doped and europium (Eu 3+ ) doped barium aluminate (BaAl 2 O 4 ) were investigated and the location of energy levels for electrons/holes traps were determined in the aluminate for TL dosimetry applications. The solution combustion technique was used to synthesize the un-doped and Eu 3+ doped BaAl 2 O 4 nanopowders. X-ray diffraction showed a hexagonal crystal structure with the space group P6 3 . The average crystallite size were found to be 50 nm and between 41 and 61 nm for un-doped and doped samples. Scanning electron microscopy showed irregular spherical and needle shapes for the un-doped and doped samples. The Kubelka–Munk function was used to calculate the optical bandgap values of 5.47 and 5.26 eV, for the un-doped and doped samples, from the diffuse reflectance spectra. The fitted x-ray photoelectron spectroscopy data demonstrated that Ba occupied two different s...

中文翻译：

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用于热致发光剂量计应用的未掺杂BaAl 2 O 4：Eu 3+纳米磷中的载流子俘获过程

研究了未掺杂和euro（Eu 3+）掺杂的铝酸钡（BaAl 2 O 4）的热致发光（TL）机理，并确定了用于TL剂量测定应用的铝酸盐中电子/空穴陷阱的能级位置。固溶燃烧技术用于合成未掺杂和Eu 3+掺杂的BaAl 2 O 4纳米粉体。X射线衍射显示具有空间群P6 3的六方晶体结构。对于未掺杂和掺杂的样品，发现平均微晶尺寸为50nm，在41和61nm之间。扫描电子显微镜显示未掺杂和掺杂样品的不规则球形和针状形状。Kubelka-Munk函数用于从漫反射光谱计算未掺杂和掺杂样品的光学带隙值5.47和5.26 eV。