Electron momentum spectroscopy
Electron momentum spectroscopy
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DOI：
10.1007/978-1-4615-4779-2
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发表时间：
1999
期刊：
影响因子：
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通讯作者：
Ian E. McCarthy
中科院分区：
文献类型：
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作者：
Ian E. McCarthy
电子动量谱通过电子束引发的运动学完全电离反应测量原子、分子和固体中电子的能量动量密度。详细介绍了谱仪的结构和截面数据的采集与处理。对反应的量子理论进行了解释，并给出了实验验证。它示出了如何提取准粒子轨道，和系数描述电子相关的数据。这些量是从原子、分子和固体的电子结构的多体理论导出的。与不太完整的方法调查电子结构的关系进行了讨论。给出的例子的原子和分子轨道和数量的测定有关的剩余离子的观察状态。对于非晶，多晶和结晶固体和表面，例子显示了价电子带的能量-动量密度，以及由于电子衍射和等离子体激元激发的影响。这本书的目的是给一个完整的帐户电子动量光谱迄今为止。它的重要性在于它是一个敏感的和实验可验证的测试，基本上是电子结构计算的每个方面。这是唯一可用的此类探测器。
Electron Momentum Spectroscopy measures the energy-momentum density of the electrons in atoms, molecules and solids by means of a kinematically-complete ionization reaction initiated by an electron beam. The construction of spectrometers and the acquisition and reduction of cross-section data are described in detail. The quantum theory of the reaction is explained and the experimental verification is given. It is shown how to extract quasiparticle orbitals, and coefficients describing electron correlations of the data. These quantities are derived from the many-body theory of the electronic structure of atoms, molecules and solids. The relationship to less complete methods of investigating electronic structure is discussed. Examples are given of the determination of atomic and molecular orbitals and quantities relating them to the observed states of the residual ion. For amorphous, polycrystalline and crystalline solids and surfaces, examples show the energy-momentum density of valence electron bands, and effects due to electron diffraction and plasmon excitation. The book aims to give a complete account of electron momentum spectroscopy to date. Its significance is that it is a sensitive and experimentally-verifiable test of essentially every aspect of calculations of electronic structure. It is the only such probe available.