【摘要】 研究了ＸＰＳ诱导的ＣｅＭ５Ｎ４５Ｎ４５俄歇峰，由于其终态空穴处于芯能级，故俄歇峰有较好的分辨率。从ＣｅＭ５Ｎ４５Ｎ４５的俄歇峰可获得中心离子Ｃｅ的电子云密度等信息，发现其俄歇参数与配位体的极化变形程度有关，从而解释了双烯烃定向聚合必须有稀土卤氧键存在的原因。更多还原

【Abstract】 The larger chemical shift of cerium compounds was discoveried. The chemical states of the cerium compounds were identified by the chernical shifts of Auger energy. The changes in Auger energy and parameters are principally due to the changes in extra-atomic relaxation or polarization energy. The increase of the polarizable properties inanions of cerium compounds corresponds to the increase of Auger energy and parameter. The Auger parameter can be measured more accurately. Ce(CF3COO).Cl3-x was also studied by ESCA. Itis shown that the electron density at cerium atom increases with the increase of x, while theelectron density at oxygen atom decreases.更多还原