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用透射型 40Cm 弯晶光谱仪研究了六种 Dy 化合物。即二倍半氧化物、氯化物、草酸盐、硫酸盐、硝酸盐和碳酸盐中 Dy 的 L_3吸收光谱,发现 L_3峰分裂成两个峰,被指明为 L_3的前吸收峰是由于向4f 能级跃迁,而 L_3主峰是由于 5s—5d 能级跃迁,报导了峰的位置,并讨论了它们的化学漂移。在所有化合物中 L_3峰伴有一根白线,此白线是由于高于 Fermj能级的空5d 态的高密度造成的强吸收。在所有化合物中,在 L_3峰处,200eV 以下观察了不同的 EXAFS特征,用三种不同的方法(即 Levy,Lytle 和 Sayers、Lytle 和 Stern 法)从 EXAFS 数据计算了键的长度。
Six Dy compounds were investigated with a transmission 40Cm bent crystal spectrometer. That is, the L_3 absorption spectrum of Dy in semisoxides, chlorides, oxalates, sulfates, nitrates, and carbonates and found that the L_3 peak splits into two peaks, the pre-absorption peak indicated as L_3 is due to the 4f level transition, and the main peak of L_3 is due to the 5s-5d level transition, reporting the location of the peaks and discussing their chemical drift. In all compounds, the L 3 peak is accompanied by a white line which is due to the strong absorption due to the high density of the vacant 5d state above the Fermj level. In all compounds, different EXAFS features were observed below 200 eV at the L_3 peak and the length of the bond was calculated from the EXAFS data using three different methods (Levy, Lytle and Sayers, Lytle and Stern).