[摘要]利用新研制的能量分辨为0.5 eV 的高分辨(e, 2e)谱仪测量了CF3I分子在9—15 eV能区的束缚能谱.新谱仪能较好地分辨该分子碘孤对轨道的自旋轨道劈裂组分5e3/2和5e1/2，并得到了它们各自的电子动量分布以及分支比随动量的变化关系.实验结果清楚地显示了5e3/2和5e1/2态波函数的相对论效应.这是第一个分子轨道波函数相对论效应的直接实验观测.
[关键字]自旋/|轨道劈裂，电子动量谱学，相对论效应，CF3I分子.
Experimental observation of relativistic effects on the electronic wavefunction in molecules
(Hefei National Laboratory for Physical Sciences at Microscale and Department of Modern Physics, University of Science and Technology of China, Hefei 230026, China)
Abstract：Binding energy spectra of CF3I in the energy range 9-15 eV have been measured by a newly developed high resolution (e, 2e) spectrometer with 0.5 eV energy resolution. The two split spin/|orbit components 5e3/2 and 5e1/2of the iodine