Multi-atom resonant photoemission
Multi-atom resonant photoemission
复制标题
多原子共振光电子发射
DOI：
10.1016/s0368-2048(00)00429-1
复制
发表时间：
2000
影响因子：
1.9
通讯作者：
C. Fadley
中科院分区：
文献类型：
--
作者：
A. Kay;F. G. D. Abajo;S. Yang;E. Arenholz;B. Mun;N. Mannella;Z. Hussain;M. Hove;C. Fadley
我们目前的实验和理论结果相关的多原子共振光电子发射，其中从一个原子上的核心水平的光电子强度的影响，核心水平的吸收共振的另一个。我们指出，一些先前的实验数据已受到强烈的影响，探测器的非线性和新的校正数据中看到的影响较小，不同的形式。修正后的数据被发现是很好地描述了由共振光电子理论的扩展到原子间的情况下，提供了超出通常的二阶Kramers-Heisenberg治疗的相互作用。这种微观理论也被发现在某些条件下简化，从而产生相当于经典的X射线光学方法的结果，后者提供了一种替代方案，虽然不太详细和一般，这些影响的物理图片。这些效应作为近邻探针的潜在效用，以及它们对X射线发射和X射线散射实验的影响，也进行了讨论。
We present experimental and theoretical results related to multiatom resonant photoemission, in which the photoelectron intensity from a core level on one atom is influenced by a core-level absorption resonance on another. We point out that some prior experimental data has been strongly influenced by detector nonlinearity and that the effects seen in new corrected data are smaller and of different form. Corrected data are found to be well described by an extension of resonant photoemission theory to the interatomic case, provided that interactions beyond the usual second-order Kramers-Heisenberg treatment are included. This microscopic theory is also found to simplify under certain conditions so as to yield results equivalent to a classical x-ray optical approach, with the latter providing an alternative, although less detailed and general, physical picture of these effects. The potential utility of these effects as near-neighbor probes, as well as their implications for x-ray emission and x-ray scattering experiments, are also discussed.