Initial-state and scattering-factor effects in photoelectron holography.
Initial-state and scattering-factor effects in photoelectron holography.
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光电子全息术中的初始状态和散射因子效应。
DOI：
10.1103/physrevb.51.1850
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发表时间：
1995
期刊：
影响因子：
--
通讯作者：
Huang
中科院分区：
文献类型：
--
作者：
Tong;Li;Huang
研究表明，源波的角向各向异性和散射因子会引起多能光电子全息图重建图像中的伪影。为了消除这种各向异性，引入了变轴小锥法。我们表明，在小角锥内，源波对原子的各向异性被对探测器的各向异性所抵消。此外，锥只采样散射因子相位斜率的平坦部分。图像位置的剩余位移可以对邻近原子进行定量校正。
Angular anisotropies in the source wave and scattering factor are shown to cause artifacts in the images reconstructed from multiple-energy photoelectron holograms. A variable-axis small-angular-cone method is introduced to eliminate such anisotropies. We show that within the small angular cone, the anisotropy of the source wave towards an atom is canceled by that towards the detector. Also, the cone only samples the flat part of the slope of the scattering factor’s phase. The remaining shift in the image position can be quantitatively corrected for the near-neighbor atoms.