重镧系离子的真空紫外吸收光谱解析

Vacuum Ultraviolet Absorption Spectral Analysis of Heavy Lanthanide Ions

详细分析了重镧系离子在真空紫外区域(VUV:λ<200 nm,E>50000 cm-1)的4fn→4fn-15d吸收光谱。结果发现,重镧系离子的激发光谱特征非常相似,谱图中都有一系列强的f-d吸收谱带,在低能量处还有一些弱f-d吸收峰,这些吸收谱带分别是由重镧系离子的自旋允许和自旋禁阻跃迁产生的。

Excited spectra of heavy lanthanide ions in the vacuum ultraviolet spectral region revealed interesting features for 4f^n→4f^n-1 5d （f-d） transition. A series of strong f-d bands and some weak f-d bands in lower energy were observed, and they were assigned to spin-allowed and spin-forbidden transitions from 4f^n ground state to 4f^n-1 5d state, respectively.