Lifetime-broadening-suppressed/free XANES spectroscopy by high-resolution resonant inelastic x-ray scattering
Lifetime-broadening-suppressed/free XANES spectroscopy by high-resolution resonant inelastic x-ray scattering
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DOI：
10.1103/physrevb.68.045122
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发表时间：
2003-07
影响因子：
3.7
通讯作者：
H. Hayashi;R. Takeda;Y. Udagawa;Tetsuya Nakamura;H. Miyagawa;H. Shoji;S. Nanao;N. Kawamura
中科院分区：
文献类型：
--
作者：
H. Hayashi;R. Takeda;Y. Udagawa;Tetsuya Nakamura;H. Miyagawa;H. Shoji;S. Nanao;N. Kawamura
共振非弹性X射线散射（RIXS）谱是唯一相关的X射线吸收振子强度分布的Kramers-Heisenberg方程通过寿命宽度的状态。在这项工作中，它表明，X射线吸收近边结构（XANES），其中的寿命展宽的1 s芯孔被抑制和2 p孔确定的分辨率，可以解析推导出从RIXS光谱。此外，它表明，数值程序可以提供寿命展宽自由（LBF）XANES，其中剩余的2 p展宽也被消除。作为示例，通过使用第三代同步加速器源SPring-8测量的RIXS光谱推导出CuO和CuCl2.2H2O的寿命展宽抑制（LBS）XANES和LBF-XANES，并与通过其他方法获得的XANES进行比较，以讨论寿命展宽抑制（LBS）XANES和LBF XANES光谱的意义。
The resonant inelastic x-ray scattering (RIXS) spectrum is uniquely related to the x-ray absorption oscillator strength distribution by the Kramers-Heisenberg equation via lifetime widths of the states involved. In this work it is shown that x-ray absorption near-edge structure (XANES), where the lifetime broadening of 1s core holes is suppressed and that of the 2p hole determines the resolution, can be analytically deduced from RIXS spectra. Furthermore, it is demonstrated that numerical procedures can provide lifetime-broadening-free (LBF) XANES, where the remaining 2p broadening is also eliminated. As examples, lifetime-broadening-suppressed (LBS) XANES and LBF-XANES of CuO and CuCl 2 .2H 2 O are derived from RIXS spectra measured by the use of a third-generation synchrotron source SPring-8 and are compared with XANES obtained by other methods to discuss the significance of LBS and LBF XANES spectroscopy.