Mean free path of inelastic electron scattering in elemental solids and oxides using transmission electron microscopy: Atomic number dependent oscillatory behavior
Mean free path of inelastic electron scattering in elemental solids and oxides using transmission electron microscopy: Atomic number dependent oscillatory behavior
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DOI：
10.1103/physrevb.77.104102
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发表时间：
2008-03-01
影响因子：
3.7
通讯作者：
Furuya, Kazuo
中科院分区：
文献类型：
--
作者：
Iakoubovskii, Konstantin;Mitsuishi, Kazutaka;Furuya, Kazuo
用200 keV透射电子显微镜测量了大多数稳定元素固体及其氧化物的非弹性电子散射λ的平均自由程。已经揭示了相对于原子序数Z的振荡行为，使得在周期表的一行中，对于具有完整（空）外部d壳层的元素，观察到λ的最小值（最大值）。对于氧化物，观察到明显较弱的λ（Z）依赖性。λ（Z）的变化归因于三个主要因素：原子密度，每个原子的“自由”电子数，以及原子芯损耗跃迁的贡献。
Mean free path of inelastic electron scattering lambda has been measured with a 200 keV transmission electron microscope for the majority of stable elemental solids and their oxides. An oscillating behavior vs atomic number Z has been revealed, such that within one row of the Periodic Table, the minimum (maximum) of lambda is observed for elements with completed (empty) outer d shells. A significantly weaker lambda(Z) dependence is observed for the oxides. The lambda(Z) variation is ascribed to the three major factors: atomic density, number of "free" electrons per atom, and contribution of atomic core-loss transitions.