exchange splitting

The results show that(1) the exchange splittings of the d-band and the magnetic moments of the Fe-atoms are different in the two clusters;(2)the change distribution in both clusters is not uniform,showing that the electrons are transferred from peripheral atoms to inner atoms,and the spin-direction(up or down)of the electrons transferred is in accordance with the symmetric characteristics.

用MS-Xα方法研究了Fe8原子簇（具有D6h对称）和Fe15原子簇（具有Oh对称）的电子结构，结果表明：（1）两种原子簇中的Fe原子磁矩及其d能带中的交换劈裂性质互不相同；（2）两类原子簇中的电荷分布不是均匀的，电荷倾向于从外围原子向内部原子上转移，并且被转移电子的自旋方向(正自旋或负自旋)与原子簇的对称性质密切相关。

Experimental studies on salt exchange between freshwater and sediments in a polder reservoir;

海湾水库蓄水初期底质与淡水盐分交换的试验研究