Site-Specific X-ray Absorption Spectroscopy Using DIFFRAXAFS
Site-Specific X-ray Absorption Spectroscopy Using DIFFRAXAFS
复制标题
使用 DIFFRAXAFS 进行位点特异性 X 射线吸收光谱
DOI：
10.7567/jjaps.32s2.206
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发表时间：
1993
期刊：
影响因子：
--
通讯作者：
G. George
中科院分区：
文献类型：
--
作者：
I. Pickering;M. Sansone;James E Marsch;G. George
衍射-XAFS或DIFFRAXAFS技术在接近相中一个原子的吸收边的能量处探测衍射峰的能量依赖的强度变化，产生类似于在XAFS实验中获得的电子和局域原子信息。在这篇文章中，我们展示了粉末DIFFRAXAFS在Co3O4的XANES区域提供特定位置信息的能力。我们还概述了一种通过同时测量透过率来消除衍射数据中的体吸收影响的方法，并演示了碳酸锂控制峰的方法。
The technique of Diffraction-XAFS , or DIFFRAXAFS probes the energy-dependent intensity variations of a diffraction peak at energies close to an absorption edge of one of the atoms in the phase, yielding electronic and local atomic information which is analogous to that obtained in an XAFS experiment. In this paper we demonstrate the ability of powder DIFFRAXAFS to give site-specific information in the XANES region of Co3O4. We also outline a method for removing the bulk absorbance effects from the diffraction data using a simultaneous measurement of transmittance, and demonstrate the method for a control peak of lithium carbonate.