Computational and experimental methodology is employed to study optical properties in Eu-doped BaAl₂O₄ phosphors. The symmetry and detailed geometry of the Eu-dopant site, predicted by atomistic simulation, are used to calculate the crystal field parameters and the intensity parameters (Ω₂ and Ω₄) based on a Judd-Ofelt approach to the Eu³⁺ ion. The phenomenological intensity parameters are obtained from the emission spectra of the Eu-doped BaAl₂O₄ and compared to the theoretical results. Experimental and calculated values for the ⁷F1 energy sub-levels of the Eu³⁺ and maximum Stark splittings (ΔE_max) are also obtained.

中文翻译：

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BaAl ₂ O ₄荧光粉中Eu掺杂离子的光谱学研究

采用计算和实验方法研究Eu掺杂BaAl ₂ O ₄荧光粉的光学性质。对称性和铕掺杂剂现场的详细几何形状，通过原子模拟预测，被用于计算晶体场参数和强度参数（Ω ₂和Ω ₄根据贾德-Ofelt理论方法来Eu）的³⁺离子。从Eu掺杂BaAl ₂ O ₄的发射光谱获得了现象强度参数，并将其与理论结果进行了比较。Eu ³⁺和最大Stark分裂（ΔE）的^7个F1能量子能级的实验和计算值_max）也被获得。