铕(Ⅲ)离子的荧光发射主要来自其~5D多重态,其中~5D_0→~7F_1及~5D_0→~7F_2更为主要,所对应的荧光峰值处的波长分别为592nm和616nm,其发射峰具有高斯函数特征,~5D_0→~7F_1跃迁属于磁偶极跃迁性质,~D_0→~7F_2跃迁属于电偶极跃迁性质。利用 The fluorescence emission of europium (Ⅲ) ion mainly comes from its ~ 5D multiplet state, of which ~ 5D_0 → ~ 7F_1 and ~ 5D_0 → ~ 7F_2 are more dominant, corresponding to the fluorescence peak wavelength of 592nm and 616nm, respectively. The emission peak of In the Gaussian function, the ~ 5D_0 → ~ 7F_1 transition belongs to the magnetic dipole transition and the ~ D_0 → ~ 7F_2 transition belongs to the dipole transition. use