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用同步辐射角分辨紫外光电子能谱对CO与Cs在Ru(1010)面上共吸附的研究结果表明,由于Cs的强烈影响,CO的分子轨道重新排列.对应清洁表面上CO分子的(5σ+1π)轨道的7.5eV谱峰分裂成两个,分别处于6.3和7.8eV,6.3eV谱峰关于一个垂直于Ru(1010)面而平行于〈0001〉晶向的镜象面反对称性.The molecular orbits of CO are rearranged under the strong influence of coadsorbed Cs atoms.The peak for CO on clean Ru(1010) surface,at 7.5eV BE attributed to the 5σ and 1π orbits,is split into two peaks with one at 6.3eV BE and the other at 7.8eV BE.The former peak shows an anti-symmetry character about the plane parallel to the crystallographic direction in the surface.
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