氟基质中Gd3+离子真空紫外光谱的理论研究

摘要

The method of ligand field theory of 4f n configuration was extended to 4f n-15d configuration,and spectral terms and J-spectral multiplet of the 4f65d configuration of Gd3+ were obtained with the method of ligand field theory.The vacuum ultraviolet transition spectra of Gd3+ in LiGdF4 and GdF3 crystals were theoretically interpreted,and the wide band in excitation and emission spectra were assigned to the spin-allowed transitions from the ground level(8S7/2)to excitation level(8P9/2)of the 4f65d configuration of Gd3+ ion.It provided a theoretical basis for the experimental study of the 4fn-15d configuration,it also provided a method for the theoretical study of the 4fn-15d configuration.%本文将4f n组态的配位场理论模型拓展到4f n-15d组态,运用配位场理论方法获得了Gd3+离子的4f65d组态的光谱项和光谱支项,并对Gd3+离子在LiGdF4和GdF3晶体中的真空紫外跃迁光谱进行了合理的理论解释,将谱图中的宽峰归属为Gd3+离子的基态能级8S7/2向4f65d激发态能级8P9/2间的自旋允许跃迁,为4f n-15d组态的实验研究提供了一定的理论依据,同时也为4f n-15d组态的理论研究提供了一种方法.