Data reduction for XAS experiments with the 100 element Ge Detector

16th International Conference on X-ray Absorption Fine Structure

Martín-Montoya, L.A.^1,2 ; Rothkirch, A.^1 ; Caliebe, W.^1

Deutsches Elektron Synchrotron (DESY), Notkestr. 85, Hamburg

22607, Germany^1

Universität Paderborn, Warburger Str. 100, Paderborn

33098, Germany^2

关键词: Fluorescence detector;    Fluorescence process;    Ge detectors;    Multi-pixel;    Sample System;    Scattering peak;    Simple regions;    Sufficient statistics;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/712/1/012016/pdf
DOI  :  10.1088/1742-6596/712/1/012016

来源: IOP

【 摘 要 】

X-ray absorption spectroscopy on dilute samples is still a challenge nowadays. By means of the fluorescence processes that follow the absorption it is possible to obtain the XAS spectrum; however, in order to gain sufficient statistics a multi-pixel fluorescence detector is required. A 100 pixel Ge detector will be available at beamline P64 at PETRA III for ultra dilute sample systems. Here, we propose a method of data reduction that resolves the line of interest from the scattering peak, improving the signal-to-noise ratio of the final XAS spectrum compared with the one obtained with a simple region of interest (ROI).