稀土离子在真空紫外区4f^n→4f^(n-1)5d跃迁光谱的分析  

VUV Spectral Analyses of 4f^n→4f^(n-1) 5d Transition of Rare Earth Ions

作　　者：范英芳[1] 李彩云[1] 

机构地区：[1]山西大学分子科学研究所,太原030006

出　　处：《化学通报》2002年第11期777-781,785,共6页Chemistry

基　　金：山西省自然科学基金资助项目 (2 0 2 10 0 9)

摘　　要：系统地分析了稀土离子在真空紫外区域 (VUV :λ <2 0 0nm ,E >5 0 0 0 0cm-1)的 4fn → 4fn -15d组态间跃迁光谱。结果发现 ;对于重镧系离子 (n >7) ,激发光谱中有一系列强的f d吸收谱带 ,在低能量处还有一些弱的f d吸收带 ,它们分别是稀土离子的自旋允许和自旋禁阻跃迁 ;而对于轻镧系离子 (n≤7) ,谱图中只有强的f d吸收谱带 ,对应于稀土离子的自旋允许跃迁。The 4f^n→4f^( n-1) 5d interconfigurational transition spectra of rare earth ions in the vacuum ultraviolet(VUV) and ultraviolet(UV) regions of the spectrum were analysized systematically.For the heavy lanthanide ions( n >7),there were a series of strong f d lines and some weak f d lines with longer wavelength energy in excitation spectra.They were spin\|allowed and spin\|forbidden transitions respectively.For the light lanthanide ions( n ≤7),there were only a series of strong f d lines,which were all spin\|allowed transitions.

关 键 词：稀土离子 真空紫外区 4f^n-15d组态 光谱跃迁 光谱吸收带 

分 类 号：O657.3[理学—分析化学]