Japan Synchrotron Radiation Research Institute/SPring-8, Kouto, Sayo, Japan.
J Synchrotron Radiat. 2011 Sep;18(Pt 5):747-52. doi: 10.1107/S0909049511027531. Epub 2011 Jul 20.
The objective of this article is to describe the capability of a two-dimensional (2D) approach to X-ray absorption near-edge structure (XANES) measurement by means of a partial fluorescence yield (PFY) method. 2D-XANES measurements were achieved by using a silicon drift detector as an energy-dispersive fluorescence detector. The advantage of this technique is that it allows full surveys of X-ray fluorescence data that are lost in conventional PFY measurements. The availability of a map approach was demonstrated by applying it to XANES measurements in both a diluted (Mn-doped nano-diamond) and a concentrated (MnO crystal) manganese sample. The 2D approach clearly distinguished between the PFY spectra of Mn and O atoms, where absorption edges of both elements are close to each other. Further, the 2D approach extracted an unambiguous PFY spectrum of phosphorus in the XANES measurement of SS304 (P < 0.045 wt%).
本文旨在描述一种二维（2D）X 射线吸收近边结构（XANES）测量方法的能力，该方法采用部分荧光产额（PFY）方法。通过使用硅漂移探测器作为能量色散荧光探测器，实现了 2D-XANES 测量。该技术的优点在于，它允许对在传统 PFY 测量中丢失的全 X 射线荧光数据进行全面调查。通过将其应用于锰的稀释（掺杂纳米金刚石）和浓缩（MnO 晶体）样品的 XANES 测量，证明了该方法具有图谱处理能力。2D 方法清楚地区分了 Mn 和 O 原子的 PFY 光谱，因为这两种元素的吸收边彼此接近。此外，2D 方法还从 SS304（P < 0.045 wt%）的 XANES 测量中提取出磷的明确的 PFY 光谱。
